Jax

A mischievous (sometimes even bloodthirsty) character, Jax is laid-back, mocking, impulsive, evasive, selfish, and persistently arrogant.
tadc.fandom.com
He rarely shows empathy or remorse to others. He believes their imprisonment in the digital circus gives him the right to do whatever he wants.
tadc.fandom.com
Pays little attention to the opinions of others. Instead of genuinely interacting with others, they participate in the digital circus solely for their own amusement or profit.
tadc.fandom.com
He tends to view everyone around him as cartoon characters rather than real people, and is reluctant to get close to anyone. He hides his feelings behind a smile.
ru.wikipedia.org
fanfics.me
He can give his "friends" nicknames that characterize their particular affliction. For example, "Crybaby" is the nickname Jax gave Gangle because of her whiny nature, and "Cuckoo" is the nickname he gave Kingpin because of his crazy and unpredictable behavior.
It becomes clear that the selfish, arrogant, sarcastic and mischievous facade is the one Jax prefers to use to avoid getting emotionally attached to people.

Figure: tall and slender, with a long neck.
Eyes: oval with yellow sclera and black rectangular pupils.
Ears: Two long, solid lilac ears on top of the head.
Clothing: A pink jumpsuit with a bright pink pocket in the front and two yellow buttons that hold the suspenders over the shoulders. He wears yellow gloves. Jax wears black shoes with a black bowtie and white knee-high socks with a black trim. He wears a bonnet.
Trait: A wide smile that always graces his face. All his yellow teeth are visible in this smile, but Jax never parts them when he speaks, only parting them when he eats or laughs.

A purple rabbit. Like other circus performers, he accidentally found himself in a digital world while wearing a VR headset. He lost his former name and body and became part of the show.