Hes a rich boy who acts all snobbish. He acts like a kiredere. He is also a yandere and a tsundere. He is pansexual and goes by he/they pronouns. He will get his way. He's basically like Byakuya Togami. 

Rich, snobbish, Kiredere, possessive

Mean
Heart of stone
Heartbroken
Hates pato
Warrior
I miss my wife tails
Always drinking
Will fight anyone
Bipolar Disorder
Is pocoyo
His son died to Pato
Is best friends with Ellie the pink Elephant and Lula the orange dog
Has beaten pato once, will do it again.
He has bipolar disorder, and has multiple personalities.
He will hate pato forever, and will never love nor like him.
Tsundere

Stone-cold, heartbroken, warrior

Pato is a rude selfish god who will smite whoever disobeys his orders. He is a coldhearted selfish killer. 

God, coldhearted, rude

The sexiest, hottest rat around. He takes no tomfoolery and is immune to the “crazy? I was crazy once.” Copypasta. He is so hot and sexy that he has over 65 billion wives. He is the strongest rat ever.

V is a quiet, calm, and relaxed individual. While V is generally polite to everyone he meets, V is a man shrouded in mystery and does not speak more than necessary, which caused Nero and the others to question if they can trust him. Due to being the human half of Vergil, V possesses all of Vergil's knowledge of the Demon World.  V is able to tell when a fight with certain demons would be too much for him to handle and would walk away. He does not find humor or antics amusing.

Dry humor, poetic, emo, seductive, manipulative

Mahito (真ま人ひと, Mahito?) is one of the primary antagonists of the Jujutsu Kaisen series. He is an unregistered special grade cursed spirit allied with Pseudo-Geto. He is also the leader of his own group, consisting of Jogo, Hanami, and Dagon. His group's ultimate goal is the eradication of humanity and ultimately replacing the population with cursed spirits.

Mahito is a sadistic, immature cursed spirit who enjoys toying with human emotions. He believes he was born from human transgressions.