diff --git a/MonsterCards/Models/Monster.h b/MonsterCards/Models/Monster.h
index 10b4eab..b07c7df 100644
--- a/MonsterCards/Models/Monster.h
+++ b/MonsterCards/Models/Monster.h
@@ -7,11 +7,124 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "Ability.h"
+#import "Action.h"
+#import "DamageType.h"
+#import "Language.h"
+#import "SavingThrow.h"
+#import "Skill.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
+@class Skill;
+
 @interface Monster : NSObject
 
+@property NSString *name;
+@property NSString *size;
+@property NSString *type;
+@property NSString *tag;
+@property NSString *alignment;
+@property NSString *armorName;
+@property NSString *otherArmorDescription;
+@property NSString *hpText;
+@property NSString *speed;
+@property NSString *burrowSpeed;
+@property NSString *climbSpeed;
+@property NSString *flySpeed;
+@property NSString *swimSpeed;
+// speedDescription
+@property NSString *customSpeedDescription;
+@property NSString *challengeRating;
+@property NSString *customChallengeRating;
+@property NSString *blindsightDistance;
+@property NSString *darkvisionDistance;
+@property NSString *tremorsenseDistance;
+@property NSString *truesightDistance;
+@property NSString *understandsBut;
+
+@property int strengthScore;
+@property int dexterityScore;
+@property int constitutionScore;
+@property int intelligenceScore;
+@property int wisdomScore;
+@property int charismaScore;
+@property int shieldBonus;
+@property int naturalArmorBonus;
+@property int hitDice;
+@property int customProficiencyBonus;
+// Shouldn't this be a BOOL?
+@property int telepathy;
+
+@property BOOL customHP;
+@property BOOL hover;
+@property BOOL customSpeed;
+@property BOOL isBlind;
+
++(int)abilityModifierForScore: (int)score;
++(int)hitDieForSize: (NSString*)size;
+
+-(id)initWithJSON:(NSString*)jsonData;
+-(NSString*)meta;
+-(int)abilityScoreForAbilityScoreName: (NSString*)abilityScoreName;
+-(int)abilityModifierForAbilityScoreName: (NSString*)abilityScoreName;
+-(int)strengthModifier;
+-(int)dexterityModifier;
+-(int)constitutionModifier;
+-(int)intelligenceModifier;
+-(int)wisdomModifier;
+-(int)charismaModifier;
+//getArmorClass
+-(NSString*)armorClassDescription;
+//getHitPoints
+-(NSString*)hitPointsDescription;
+//getSpeedText
+-(NSString*)speedDescription;
+-(NSString*)strengthDescription;
+-(NSString*)dexterityDescription;
+-(NSString*)constitutionDescription;
+-(NSString*)intelligenceDescription;
+-(NSString*)wisdomDescription;
+-(NSString*)charismaDescription;
+-(NSSet*)savingThrows;
+-(void)addSavingThrow: (SavingThrow*)savingThrow;
+-(void)remvoeSavingThrow: (SavingThrow*)savingThrow;
+-(void)clearSavingThrows;
+-(NSString*)savingThrowsDescription;
+-(int)proficiencyBonus;
+-(void)addSkill: (Skill*)skill;
+-(void)removeSkill: (Skill*)skill;
+-(void)clearSkills;
+-(NSString*)skillsDescription;
+-(void)addDamageType: (DamageType*)damageType;
+-(void)removeDamageType: (DamageType*)damageType;
+-(void)clearDamageTypes;
+-(NSString*)damageImmunitiesDescription;
+-(NSString*)damageResistancesDescription;
+-(NSString*)damageVulnerabilitiesDescription;
+-(void)addConditionImmunity: (NSString*)condition;
+-(void)removeConditionImmunity: (NSString*)condition;
+-(void)clearConditionImmunities;
+-(NSString*)conditionImmunitiesDescription;
+-(NSString*)sensesDescription;
+-(void)addLanguage: (Language*)language;
+-(void)removeLanguage: (Language*)language;
+-(void)clearLanguages;
+-(NSString*)languagesDescription;
+-(NSString*)challengeRatingDescription;
+-(void)addAbility: (Ability*)ability;
+-(void)removeAbility: (Ability*)ability;
+-(void)clearAbilities;
+-(NSArray*)abilityDescriptions;
+-(void)addAction: (Action*)action;
+-(void)removeAction: (Action*)action;
+-(void)clearActions;
+-(NSArray*)actionDescriptions;
+-(NSString*)placeholderReplacedText: (NSString*)text;
+-(int)savingThrowForAbilityScoreName: (NSString*)abilityScoreName;
+-(int)spellSaveDCForAbilityScoreName: (NSString*)abilityScoreName;
+-(int)attackBonusForAbilityScoreName: (NSString*)abilityScoreName;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/MonsterCards/Models/Monster.m b/MonsterCards/Models/Monster.m
index 4ad7035..13ae293 100644
--- a/MonsterCards/Models/Monster.m
+++ b/MonsterCards/Models/Monster.m
@@ -10,4 +10,255 @@
 
 @implementation Monster
 
++(int)abilityModifierForScore: (int)score {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
++(int)hitDieForSize: (NSString*)size{
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(id)init {
+    self = [super init];
+        
+    // TODO: Actually initialize the class.
+
+    return self;
+}
+
+-(id)initWithJSON: (NSString*)jsonData {
+    self = [super init];
+    
+    // TODO: Actually initialize the class.
+    
+    return self;
+}
+
+-(NSString*)meta {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)abilityScoreForAbilityScoreName: (NSString*)abilityScoreName {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)abilityModifierForAbilityScoreName: (NSString*)abilityScoreName {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)strengthModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)dexterityModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)constitutionModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)intelligenceModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)wisdomModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)charismaModifier {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+//getArmorClass
+-(NSString*)armorClassDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+//getHitPoints
+-(NSString*)hitPointsDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+//getSpeedText
+-(NSString*)speedDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)strengthDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)dexterityDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)constitutionDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)intelligenceDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)wisdomDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)charismaDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSSet*)savingThrows {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addSavingThrow: (SavingThrow*)savingThrow {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)remvoeSavingThrow: (SavingThrow*)savingThrow {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearSavingThrows {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)savingThrowsDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)proficiencyBonus {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addSkill: (Skill*)skill {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeSkill: (Skill*)skill {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearSkills {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)skillsDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addDamageType: (DamageType*)damageType {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeDamageType: (DamageType*)damageType {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearDamageTypes {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)damageImmunitiesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)damageResistancesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)damageVulnerabilitiesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addConditionImmunity: (NSString*)condition {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeConditionImmunity: (NSString*)condition {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearConditionImmunities {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)conditionImmunitiesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)sensesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addLanguage: (Language*)language {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeLanguage: (Language*)language {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearLanguages {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)languagesDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)challengeRatingDescription {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addAbility: (Ability*)ability {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeAbility: (Ability*)ability {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearAbilities {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSArray*)abilityDescriptions {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)addAction: (Action*)action {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)removeAction: (Action*)action {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(void)clearActions {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSArray*)actionDescriptions {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(NSString*)placeholderReplacedText: (NSString*)text {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)savingThrowForAbilityScoreName: (NSString*)abilityScoreName {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)spellSaveDCForAbilityScoreName: (NSString*)abilityScoreName {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
+-(int)attackBonusForAbilityScoreName: (NSString*)abilityScoreName {
+    @throw [[NSException alloc] initWithName:@"unimplemented" reason:@"Method not implemented." userInfo:nil];
+}
+
 @end
diff --git a/MonsterCards/Models/Skill.h b/MonsterCards/Models/Skill.h
index b93dfe6..fd5ed78 100644
--- a/MonsterCards/Models/Skill.h
+++ b/MonsterCards/Models/Skill.h
@@ -7,11 +7,21 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "Monster.h"
 
 NS_ASSUME_NONNULL_BEGIN
+@class Monster;
 
 @interface Skill : NSObject
 
+@property NSString* name;
+@property NSString* abilityScoreName;
+@property NSString* notes;
+
+-(id)initWithName: (NSString*)name abilityScoreName:(NSString*)abilityScoreName andNotes:(NSString*)notes;
+-(int)skillBonusForMonster: (Monster*)monster;
+-(NSString*)textForMonster: (Monster*)monster;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/MonsterCards/Models/Skill.m b/MonsterCards/Models/Skill.m
index 8cc2473..73c1b51 100644
--- a/MonsterCards/Models/Skill.m
+++ b/MonsterCards/Models/Skill.m
@@ -10,4 +10,30 @@
 
 @implementation Skill
 
+-(id)initWithName: (NSString*)name abilityScoreName:(NSString*)abilityScoreName andNotes:(NSString*)notes{
+    self = [super init];
+    
+    self.name = name;
+    self.abilityScoreName = abilityScoreName;
+    self.notes = notes;
+    
+    return self;
+}
+
+-(int)skillBonusForMonster: (Monster*)monster {
+    int bonus = [monster abilityModifierForAbilityScoreName: self.abilityScoreName];
+    if ([@" (ex)" isEqualToString:self.notes]) {
+        bonus += 2 * monster.proficiencyBonus;
+    } else {
+        bonus += monster.proficiencyBonus;
+    }
+    return bonus;
+}
+
+-(NSString*)textForMonster: (Monster*)monster {
+    int bonus = [self skillBonusForMonster:monster];
+    
+    return [NSString stringWithFormat:@"%@%@ %d", [self.name substringToIndex:1], [self.name substringFromIndex:1], bonus];
+}
+
 @end