Who Would Win?

Victor Von Doom

Monarch of Latveria, scientist, sorcerer

Flight, Super Strength, Super Speed, Agility, Stamina, Invulnerability, Telekinesis, Intellect, Teleport, Radar Sense, Psychic, Force Field, Blast Power, Magic, Weapon Master, Super Sight, Super Smell, Super Hearing, Psionic, Insanely Rich, Power Suit, Unarmed Combat, Gadgets, Siphon Abilities, Size Manipulation, Necromancy, Electricity Control, Sub-Mariner, Mesmerize, Escape Artist, Tracking, Possession, Adaptive, Energy-Enhanced Strike, Technopathy, Holographic Projection, Swordsmanship, Electronic Disruption, Levitation, Omni-lingual, Energy Shield, Time Travel, Illusion Casting, Genetic Manipulation, Time Manipulation, Power Item, Hypnosis, Energy Absorption, Energy Manipulation, Willpower-Based Constructs, Energy Based Constructs, Voice-induced Manipulation, Stealth, Leadership

Doom armor (force fields, energy blasts, flight), Doombots, time platform, Latverian resources

All-Scar Squadron, Avengers, Avenging Host, Black Cabinet, Cabal, Challengers of Doom, Cosmic Champions, Council of Doom, Doctor Doom's Generals, Doom Academy, Doombots, Fantastic Four, Future Foundation, Galactic Council, Guardians of the Galaxy, Human High Council, Illuminati, Intelligencia, Latverian Army, Legion Accursed, Lethal Legion, Marvel Balls, Masters of Evil, Prime Movers, Romani, S.H.I.E.L.D., Savage Avengers, SHIELD 2099, Strange Academy, The Chronos Corps, The Fearsome Four, The Light Brigade, The Makers Chosen, The Vi-Locks, Time-Plucked Titans, Von Doom Industries, Zefiro Gypsies

Mantis

Celestial Madonna, former adventuress, former bar-maid/prostitute/exotic dancer

Empathy, Precognition, Expert Martial Artist, Plant Communication, Pyrokinesis (celestial), Astral Projection

None (innate powers)

Guardians of the Galaxy, Avengers