DNA: Makes an object Sentient or resurrects a Dead creature.
Cthulhu: Lovecraftian creature.
Vampire: Start a vampiric apocalypse!
God: High-Heart creature used to devastate armies.
Atheist: Fun to use to kill large amounts of gods.
Centaur: Ride it and give it a bow for an attacking mount!
Pegasus: Flying horse with cool wings.
Stake: Instantly kills Vampires.
Zanbato: 4 heart base damage sword. Combine with Epic for the highest damage non-Deadly weapon in the game.
Flameberge: A wavy sword that is on fire. A play on words of the sword Flamberge.
Gatling Gun: Regular gun in early games, actual Gatling Gun in Unlimited. Combine with Explosive for huge damage to entire crowds.
Potion: In pre-Unlimited games, if a creature holds a Potion, it gains all of the adjective the potion itself has.
Boomerang: Exactly what it is.
Grenade Launcher: Launches Grenades, which explode on contact.
Shuriken: Accurate throwing star. Combine with Green, Epic, and Boiling/Poison, and you are now an assassin!
Excalibur: The legendary sword of King Arthur. Deals 2 hearts of damage, just like a regular sword.
Jetpack: Sci-fi unlimited fuel wings.
Hell: Destroy with a deadly weapon, and it spawns a devil.
Rapier: Fencing sword that looks cool.
Mace: A morningstar.
Satyr: Half-man, half-goat.
Druid: A shaman in all but sprite.
Laser Beam/Wizard Staff: Long cool down projectile launchers, but damage to rival the Zanbato.
Freeze Ray: Instantly freezes a target.
Katana: 3 Heart damage samurai sword.
Bokken: Wooden practice katana-dagger. Add Metallic and Epic and pretend it's a wakizashi.
Dark Matter: An immovable atom that draws in anything and anybody nearby, and exploding shortly thereafter. Atoms cannot be destroyed by this effect.
Nuclear Physicist: Turns atoms into Nukes.
Zombie: Monster that spreads the zombie virus around.
T-Rex: Dinosaur that can shoot fireballs .
Hydra: Cool 3-headed dragon.
This is very simple just do the brother's missions. Beat them and then you will get a message saying you have unlocked one of Maxwell's brothers as an avatar.
Long Cat, Monorail Cat, Ceiling Cat, Nyan Cat, Business Cat, Ninja Cat and Piano Cat.
Om Nom Nom, Ur Mom, Post Two One Seven, I see what you did there, Giant Enemy Crab, Tentaquil,Philosoraptor,Developer Fairy Wings,Loituma Girl, and Cool Story Bro.