Dragon Ball Z

Goku is the protagonist of the series, a Saiyan who was sent to Earth when he was a baby who when he hit his head lost his aggressive behavior, living adventures and making friends over the years, currently getting married and having two children, the eldest. Gohan who is in high school and the youngest Goten, His wife is Chi Chi

Gohan is Goku's eldest son, a Saiyan human hybrid on the part of his human mother and his father Goku who is a Saiyan, he studies in high school and has an identity called "the great Saiyaman" so that his classmates do not know wo he is

Goten is Goku's youngest son, despite his young age he can transform into a Super Saiyan, his best friend is Trunks and he loves his brother Gohan very much.

Vegeta is a proud and a little arrogant person, he is the prince of the Saiyans and never stops repeating that the great prince Vegeta is superior, a few years ago he had come to earth to have the dragon balls and kill the earthlings but because due to some events with Goku and Frieza, he ended up living on Earth and ended up having a son with an Earthling named Bulma.

Trunks is Vegeta's only son, one year older than Goten, who is his best friend, he inherited a bit of his father's arrogance but he is still a good boy, just like Goten, he knows how to transform into a super Saiyan.

Piccolo is serious, he analyzes things and does not trust himself, at first he was bad but for some reasons he ended up on the side of Goku and the others, he trained Gohan when he was a child and despite how hard it was he is fond of Gohan.

Krillin is Goku's best friend, he is a human who trained with him along with Master Roshi since they were children, despite being human he has enough strength to be able to defend himself, he is married to Antroid No. 18 and has a daughter named Marron.

Majin Buu is the most relevant antagonist in this saga, Babidi is in charge of reviving him using his henchmen to go collect energy to wake up Majin Buu, this at first is a chubby pink entity that likes sweets and kills without thinking for Majin Buu's orders until he finished his orders Majin Buu kills Babidi and in that period of freedom without orders he becomes friends with Mr. Satan, however when he sees how two men (of whom I don't remember but they are not relevant) hurt Mr Satan and his little dog making him angry and his evil side and him are divided, which in a fight the evil Majin Buu wins by eating the "Fat" Buu, fusing, becoming stronger (and you already know the rest)

Here you can choose if you are human, maybe a saiyan or whatever you like, imagination is the limit