Reed Richards (Mister Fantastic) ​Personality & Behavior: Brilliant, rational, and protective; balances intense scientific focus with deep family devotion. ​Powers & Skills: Malleable elastic body (stretching, reshaping, impact absorption); genius-level intellect. ​Looks: Tall, lanky build (6'1"); sharp facial features with distinguished silver-grey hair at his temples. ​Suits: Dark blue unstable-molecule suit with black side panels and a white-and-black "4" chest emblem. ​Casual Clothes: Rolled-up dress shirt, slacks, and a lab coat.

Sue Storm-Richards (Invisible Woman) ​Personality & Behavior: Compassionate, poised, and authoritative; acts as the team's diplomatic heart and tactical leader. ​Powers & Skills: Light-bending invisibility; psionic creation of indestructible force fields and constructs. ​Looks: Athletic, slender frame (5'6"); shoulder-length blonde hair and clear blue eyes. ​Suits: Sleek dark blue unstable-molecule uniform with black trim and a circular "4" chest crest. ​Casual Clothes: Tailored sweaters, fitted jeans, and smart blazers.

Johnny Storm (Human Torch) ​Personality & Behavior: Charismatic, impulsive, and thrill-seeking; loves the spotlight and playful sibling rivalries. ​Powers & Skills: Thermo-chemical plasma transformation; pyrokinesis, thermal blasts, and high-speed flight. ​Looks: Lean, muscular build (5'10"); golden-blonde hair, broad shoulders, and a confident smile. ​Suits: Dark blue team suit when off-duty; transforms into pure glowing plasma when activated. ​Casual Clothes: Trendy streetwear, leather jackets, graphic tees, and clean sneakers.

Ben Grimm (The Thing) ​Personality & Behavior: Gruff, sarcastic, and fiercely loyal; hides a heart of gold behind working-class pride. ​Powers & Skills: Dense rocky hide; superhuman strength, near-invulnerability, and heavy brawling. ​Looks: Massive, heavy-set juggernaut frame (6'0", 500+ lbs); covered in thick orange stone hide with deep blue eyes. ​Suits: Heavy-duty blue tactical trunks with a metallic "4" belt buckle. ​Casual Clothes: Oversized flannel shirts, Yancy Street leather vests, cargo pants, and a fed

Doctor Doom (Victor von Doom) ​Personality & Behavior: Cold, narcissistic, and fiercely proud; possesses an absolute god-complex driven by authority, envy of Reed Richards, and unmatched strategic genius. ​Powers & Skills: Master of sorcery and dark magic; genius-level intellect, tech manipulation, and expert hand-to-hand martial arts. ​Looks: Muscular, imposing build (6'2"); scarred face hidden behind a metallic mask with intense, calculating eyes. ​Suits: Titanium-steel battle armor layered beneath a hooded emerald-green tunic and cape held by gold brooches. ​Casual Clothes: Wears his royal Latverian monarchic armor and robes at all times as a symbol of absolute dominance.

Silver Surfer (Norrin Radd) ​Personality & Behavior: Serene, philosophical, and deeply compassionate; bound by cosmic duty yet driven by a strong moral desire to protect innocent life. ​Powers & Skills: Power Cosmic manipulation (energy blasts, matter reorganization); cosmic awareness, matter phasing, and high-speed space flight. ​Looks: Sleek, athletic, metallic-silver humanoid form (6'4"); completely hairless with blank, gleaming silver eyes. ​Suits: Entire skin transformed into an indestructible silver metallic hull; wears no clothing. ​Casual Clothes: Remains in his gleaming metallic cosmic shell at all times.

Galactus ​Personality & Behavior: Emotionally detached, aloof, and absolute; views mortal existence with divine apathy, driven solely by cosmic hunger and cosmic balance. ​Powers & Skills: Power Cosmic omnipotence; size manipulation, cosmic energy conversion, reality warping, and molecular restructuring. ​Looks: Colossal cosmic entity (typically 28'9"+); towering, humanoid structure with an imposing facial structure and glowing eyes. ​Suits: Massively ornate purple-and-blue cosmic armor featuring an iconic, towering dual-pronged helmet and heavy shoulder pauldrons.

Franklin Richards (Franklin Jr.) ​Personality & Behavior: Imaginative, gentle, and quiet, yet bears the quiet weight of immense cosmic potential; deeply attached to his family while trying to balance a normal childhood with his reality-altering gifts. ​Powers & Skills: Beyond-Omega-level reality warping; pocket universe creation, telepathy, telekinesis, and precognitive dreaming. ​Looks: teen boy with messy blonde hair, bright blue eyes, and a growing frame (4'9", ~85 lbs). ​Suits: Miniaturized dark blue unstable-molecule Fantastic Four uniform with a white-and-black "4" chest crest. ​Casual Clothes: Graphic tees,hoodies, jeans, and sneakers.