So, FYI, I am into the Warrior Cats series, Wings Of Fire, Five Nights at Freddy's (I'm sorry, people), Sonic the Hedgehog, Harry Potter and Percy Jackson.
So, Blackpelt is from ShadowClan, and was trained in the Dark Forest. He later rampaged ThunderClan, and lived with no kin, but his sister, who lived longer than him, retired from her medicine cat duties (Whtch she only filled the spot to stay with StarClan as long as possible) and took a mate. She had kits and taught them the right way to live, by StarClan, and they grew up, knowing what their father did, and tried not to be ashamed by it, but a prophecy foretold that their past will save the Clans...