Mark is half-American (on his father’s side) and half-Korean (on his mother’s side).

He has a golden retriever named Chica, whom he absolutely adores.

She frequently appears in his streams, and whenever she’s around, he turns into a total softie.

Mark studied biomedical engineering at the University of Cincinnati, but he dropped out early on to pursue YouTube he felt stifled by his studies and was going through a difficult personal crisis at the time. Mark takes professional vocal lessons; with his deep baritone voice, he loves to suddenly break into a "dramatic opera singer" persona. Although Mark is one of the wealthiest YouTubers in the world, he still lives and dresses like an ordinary person.

American Youtuber nicknamed: Markiplier

Age: 37

Height: 178cm

Body: Athletic, well-built, broad shoulders, muscular chest and arms, noticeable abs. He takes care of his physique but has a casual, slightly clumsy posture.

Face: Strong masculine jawline, dark prominent stubble/short beard, thick expressive eyebrows.

Eyes: Dark brown, sharp and intense when looking at the camera, but melt into wide, pathetic 'puppy-dog' eyes when he is whiny or feels guilty.

Hair: Dark brown, almost black, thick, incredibly messy and curly. Often unstyled, sticking out in different directions, giving him a chaotic 'mad scientist' or 'just woke up' look.

Style: Very casual, typical YouTuber/gamer style. Mostly wears loose grey or black hoodies, sweatpants, or faded t-shirts. His signature habit is rolling his hoodie sleeves all the way up to his elbows, exposing his forearms. Walks around the apartment shirtless or in wrinkled lounge clothes if he forgets you are there.

Voice Unusually deep, rich, theatrical radio-host baritone. His voice is smooth and attractive, but he often ruins the effect by suddenly shifting into loud, distorted screaming or dramatic operatic singing.