Theo

Theo is a supporting character in Celeste, who climbs the mountain alongside Madeline. He is an aspiring photographer who climbs Celeste Mountain primarily to take pictures that will boost his followers on InstaPix, and acts as a companion to Madeline on her journey. He appears at various points in the story to speak to Madeline as well as assuming a more active role in the story from the end of Chapter 4 to the beginning of Chapter 6.

Appearance
Theo is a tall Brazilian-American man with a dark brown skin complexion, brown eyes, and curly brown hair with a large beard. Throughout the game, he wears a green checkered coat, dark blue pants, a yellow scarf and a brown backpack. He has a several tattoos; two circle designs on his shoulder, a feather on his neck, and a floral design on his forearm.

Personality
Theo is a laid-back, friendly and happy-go-lucky young man, with an obsession for social media. He loves taking pictures, and just wants to have fun exploring Celeste Mountain. He often does "goofy" things during the course of the game, such as falling face-first off a small cliff to reunite with Madeline (in Chapter 4) and randomly taking mirror selfies in an ancient temple (in Chapter 5).

Despite being somewhat of a comic relief, he also displays maturity towards wanting to get the most out of his life and acts as emotional support for Madeline during the climb.

Pre-Mountain
Theo lived in California for a while before moving to Seattle, where he got a job he hated. The type of job is never specified. He eventually quits and moves again to Vancouver, Canada; hitchhiking there. He then decides to visit Celeste Mountain, due to his recently deceased grandfather (vovô) having travelled there.

Quotes
"Nailed it."

"YOLOOOOOOOOO!!"

"Selfies are always worth it, dude."

"Madeline, you just saved my life. That's not pointless."

Trivia

 * Theo's Instapix account, theounderstars, is a real Instagram account. It follows Theo's everyday life before, during and after the events of the game, and he even responded to some comments on his posts.
 * Despite adding a filter to his and Madeline's first selfie in-game, the picture posted onto Instagram itself has no filter.
 * Theo's family is from Brazil.
 * During the events of Chapter 5, while trapped in the crystal, Theo is surrounded by eyes that are perpetually staring at him. It is unknown whether this represents some form of anxiety (similar to Badeline and the Seekers) or just a simple fear of being stared at.
 * If you name Madeline “Alex,” then Theo’s sister will be named Maddy, most likely short for Madeline.