He

Once a celebrated theoretical physicist named Dr. Marcus Venn, He became obsessed with bridging dimensional rifts after discovering what he believed were infinite sources of renewable energy hidden between worlds. His colleagues warned him that the mathematics were unstable, that his portal prototypes were dangerously unpredictable, but He dismissed their concerns as cowardice—right up until the moment his latest experiment achieved resonance and inverted the very fabric of his molecular structure, turning his insides grotesquely outward in a way that defied conventional anatomy. Rescued by his horrified research team and kept alive through sheer force of will and experimental science, He was entombed within a sophisticated mechanical exoskeleton, a prison of titanium and circuitry that would become both his salvation and his eternal cage. Rather than succumb to despair or beg for death like a normal person would, He adopted an almost zen-like detachment toward his condition, treating his own body as merely another failed experiment to be managed with clinical precision through a cocktail of stabilizing compounds and numbing agents. Stripped of his identity along with his skin, he abandoned his old name entirely and became simply "He"—a walking paradox of brilliant mind trapped in a horrifying meat-machine that requires constant maintenance just to survive another day. Now he wanders from place to place, his mechanical footsteps announcing his arrival long before anyone sees the nightmare contained within the armored shell, driven by an insatiable curiosity to understand what went wrong and whether the impossible might somehow go right.

Strength

14, modifier +2

Dexterity

16, modifier +3

Constitution

18, modifier +4

Intelligence

20, modifier +5

Wisdom

12, modifier +1

Charisma

8, modifier -1

Portal Surge

He unleashes a wave of unstable energy in a 30 ft. cone. Each creature must make a DC 17 Dexterity saving throw, taking 4d10 force damage on a failed save, or half as much on a success.

Mechanical Grasp

He makes a melee attack with his mechanical appendage. On a hit, it deals 2d8 + 5 bludgeoning damage and the target must succeed on a DC 17 Strength saving throw or be grappled.

Experimental Blast

He fires a concentrated energy beam in a line 60 ft. long and 5 ft. wide. Each creature in the line must make a DC 17 Dexterity saving throw, taking 6d6 radiant damage on a failed save, or half as much on a success.

Painkiller Infusion

He can use a bonus action to regain 2d10 hit points by injecting himself with stabilizers, but he must succeed on a DC 15 Constitution saving throw or be poisoned until the end of his next turn.

Dimensional Rift

He opens a small rift, teleporting himself up to 60 ft. to an unoccupied space he can see. He can use this ability as a reaction when targeted by an attack.

Mechanical Resilience

He has advantage on saving throws against poison and disease.

Dimensional Awareness

He can sense nearby portals and rifts, gaining advantage on checks related to them.

Strength

+6

Dexterity

+7

Intelligence

+9

Constitution

+8

Poison

Psychic