Emotions are a feature which is available in all of the games. Emotions appear above NPCs when they have a certain emotion towards something. Sometimes emotions are displayed when an object sees another object. In other cases, objects will display a certain emotion related to any adjectives that they may possess. For instance, an object with an adjective that affects its value will display the "money" emotion.
Since objects can have adjectives applied to them in Super Scribblenauts, more various explicit emotions are shown. Several are available and few aren't available in Super Scribblenauts.
Icon
Name
Emotion
Cut
NPC will cut down trees.
Religious
NPC will follow religious object
Artistic
NPC will pick up an artistic object
Birdlike
NPC will have wings or is birdlike
Family/Masonic
NPC will act friendly and family-like to NPC's. In Remix, birds show this to a birdhouse, and people show this to a house.
Acid
NPC is 'Alkali' or Frostbreathing or any other science type or term.
Royal
NPC will have a crown and observe royal objects.
Dying/Dead/Deadly
NPC dies slowly, causes death, or is dead.
Thirsty
NPC will drink liquids.
Electrified
NPC will flash and takes damage and attacks, will shock enemies, or is signaling an electrical object.
Funny
NPC will turn an NPC friendly or is attracted to a toy.
Evil
NPC will fight and steal
Flaming
NPC will be flamed and takes damage and attacks, will fire breath enemies
Flower
NPC will pick up flowers or is attracted to flowers
Sporty
NPC will pick up or signify any sporty objects
Hypnotized/Hypnotizing
NPC will be hypnotized and may follow other NPC's, NPC is hypnotic. NPC may also be crazy
Undead
NPC will make some other NPCs scared.
Smart
NPC will have a schoolcap.
Toxic
NPC will be poisoned or poisonous.
Angelic/Godly
NPC will have a halo and wings. God NPC will follow the angelic NPC.
Strong/invincible
NPC has a stronger health, deals more damage, and is significantly larger.
Rich
NPC will pick up shiny objects.
Explosive
NPC can be detonated and explode when contact with any attacks, NPC detonates explosive objects
Annoying
NPC will annoy another NPCs, the other NPC becomes angry
Male
NPC is idle to male NPCs
Female
NPC is idle to female NPCs
Magical
NPC becomes animated and shoots magic
Musical
NPCs will show interest in instruments
Mathematical
NPC shows interest in anything mathematical.
Family
When two family members are next to one another.
Surprised
NPC will play a scared animation.
Fishy
NPC will have a scales and act like a fish.
Consumable
NPC can be eaten by other NPCs.
Law Enforcement
When a policeman equips an forensic.
Romantic
When two NPCs of the opposite are next to each other.
Meditative
NPCs will investigate temples.
Doglike
NPCs will have fur, and will act like a dog.
Tool
When the Construction Worker equips an tool.
Healthy/Medical
NPCs get full life. Doctor equips a medical item.
Scientific
NPCs will equip science equipments.
Military
NPCs will spawn with a Machine Gun and be hostile towards criminals.
Peaceful
NPCs will not attack anyone.
Herbivorous/Ecologist
NPCs will eat vegetables. NPCs will investigate plants and trees.
Political
NPCs will investigate politics related people.
Radioactive
Objects will deal damage to objects close to it.
Mystical
NPCs will investigate ancient structures.
Medieval
NPCs will investigate castles and kings.
Glasses
NPCs will spawn wielding glasses.
Unused
Not presented in-game. You can also make one with this and hack the game to add your own emotion.
Scribblenauts Unlimited and Scribblenauts Unmasked
With the addition of the Object Editor many emotions were added to the game, making the characters and objects much more expressive. There are 222 emotion in total in both Scribblenauts Unlimited and Scribblenauts Unmasked.
Object Editor
Unused
There are 3 unused emotions found in the game files, they are inaccessible in-game.
Object Editor
Trivia
The reason Scribblenauts use emotions because Fifth Cell and Shiver Entertainment didn't want to have to make millions of different faces for each monster, person, animal, or inanamite object with a living adjective on it.