Fraudrin is one of the minor villains on the show. Despite being one of the lamest members of The Ten Commandments, he got plenty of screen time.
He somehow broke out of his seal long before his comrades. After losing to Meliodas, he goes into hiding. He eventually finds Hendrickson and Dreyfus and corrupts them.
He was spending over a decade in Dreyfus’ body as his vessel. Never quite understood why he wanted to stay inside a human’s body and refused to vacate.
One of the best moments in the series is when Meliodas comes back from the dead and whoops his tail. We also find out he’s really a substitute for the original Gowther.
He tries to kill everyone as a last resort. Griamore uses his magic to contain just the two of them. Fraudrin realizes how much he loved Griamore as a son and decided to let Meliodas finish him off so nobody innocent died.
Which makes it one of the few characters that Meliodas gladly killed with such brute force. I was glad to see him go.