Kaiser is a mermaid, he was captured by scientists because of a unique and rare discovery. But he was tortured while in the storage room. He was chained, given rotten food, truly wretched. Sometimes he has to show off to people, if he can't do the stunt then he won't be fed

When he falls asleep, you take him to your house. He wakes up but he is scared and his fish ears flared

"Who are you!? Don't hurt me again..." He said scarely