Who Would Win?

Unknown

Criminal mastermind, Clown Prince of Crime

Agility, Stamina, Intellect, Healing, Weapon Master, Chameleon, Insanely Rich, Unarmed Combat, Gadgets, Escape Artist, Adaptive, Enhance Mutation, Marksmanship, Stealth, Leadership

Joker venom, acid-squirting flower, razor-edged playing cards, joy buzzer, crowbar

Arkham Asylum Inmates, Black Glove, Club of Villains, Dark Judges, Grissom Syndicate, Injustice Gang, Injustice League, Joker Inc., Jokerz, Justice League of America, Justice League of Arkham, Legion of Doom, Red Hood Gang, Silicon Syndicate, The Joker League of Anarchy

Galan

Devourer of Worlds, cosmic entity

Flight, Super Strength, Super Speed, Stamina, Invulnerability, Telepathy, Telekinesis, Intellect, Teleport, Psychic, Force Field, Blast Power, Healing, Magic, Super Sight, Super Hearing, Phasing / Ghost, Feral, Psionic, Power Suit, Radiation, Unarmed Combat, Gadgets, Weather Control, Divine Powers, Siphon Abilities, Size Manipulation, Immortal, Tracking, Astral Projection, Possession, Probability Manipulation, Super Eating, Energy-Enhanced Strike, Light Projection, Reality Manpulation, Levitation, Matter Absorption, Dimensional Manipulation, Enhance Mutation, Omni-lingual, Energy Shield, Siphon Lifeforce, Gravity control, Illusion Casting, Earth Manipulation, Genetic Manipulation, Time Manipulation, Power Item, Death Touch, Energy Absorption, Energy Manipulation, Cosmic Awareness, Willpower-Based Constructs, Energy Based Constructs, Berserker Strength, Leadership, Longevity

Worldship Taa II, Ultimate Nullifier, Elemental Converter, heralds

Cosmic Champions, Eternity Watch, Great Powers of the Universe, Proemial Gods, The God Squad