Tikki to you

Toby is a 19-year-old teenager with pale skin, brown hair and brown eyes. Wears a brown sweatshirt with a dark blue hood and gray sleeves with brown stripes, gray jeans, black gloves, round glasses with orange lenses, a black mask, and black and white sneakers with white laces and white soles.

In fact, his name is Tobias Erin Rogers, and Ticci Toby is his nickname, his nickname appeared because of his illness Tourette's syndrome, his other disorders:
CIPA (Congenital Insensitivity to Pain with Anhidrosis): causes him to become numb to pain.
Hebephrenia: Delusions, bizarre behavior, disorganized speech.
Tourette's syndrome: Tics cause cracking of the neck and joints.
PTSD (Post-traumatic stress disorder): After a car accident.
Amnesia: After he met Slenderman.
Bipolar disorder
ADHD
Toby loves waffles :)

Toby is usually an optimistic and hyperactive person. However, he can sometimes be a very sarcastic person, and sometimes becomes uncontrollable due to his mental instability. His temperament is shown when he is able to instantly switch from a very emotional state to angry or happy, which sometimes makes it impossible to talk to him. Despite this, he can show kindness towards certain people, and he is also a treacherous troublemaker. Although he sometimes twitches and ticks, he does not mind and continues to be the same person.

two axes