Who Would Win?

Donatello

Inventor / Ninja

Ninjutsu Mastery, Bo Staff Combat, Genius-Level Intellect, Technological Expertise, Stealth, Enhanced Agility

Bo Staff, Tech Gadgets, Computer Equipment

Teenage Mutant Ninja Turtles

Robert Bruce Banner

Nuclear physicist, Avenger

Super Strength, Super Speed, Agility, Stamina, Invulnerability, Intellect, Blast Power, Healing, Weapon Master, Super Sight, Shape Shifter, Radiation, Unarmed Combat, Gadgets, Immortal, Tracking, Adaptive, Energy Absorption, Berserker Strength, Longevity

Generally relies on raw power; occasionally: Warbound armor, Banner-tech weapons

Amazing Friends, Avengers, Challengers of Doom, Children of Eternal Light, Cosmic Avengers, Cosmic Champions, Dark Ultimates, Defenders, Fantastic Four, Hard 7, Heralds of Onslaught, Heroes For Hire, Horsemen of Apocalypse, Hulk Gang, Hulkbusters, Human High Council, Illuminati, Immortal Weapons, Maker's Council, Marvel Balls, Marvel Werewolves, Marvel Zombies, Mini-Hulks, New Fantastic Four, Pantheon, S.H.I.E.L.D., S.M.A.S.H., Secret Avengers, Super Hero Squad, T.I.M.E., The Law Enforcement Squad, The Triad, The Vi-Locks, The Worthy, True People Tribe, Ultimates, Warbound, Weapon X, X-Men, X-Saviours