Do you know what it's like to have to lick your own bum to fit in?.
Yes, it's an evil twin thing.

Otto Hill is the evil twin brother of Harry Hill, and is the main antagonist of the 2013 film The Harry Hill Movie.

He was abandoned by his grandmother when he was younger, because she could never tell him apart from Harry, and ended up being raised by Alsatians. So, he decides to get revenge by kidnapping Harry's pet hamster Abu, with his henchmen Ed and Kisko.

Otto tries numerous attempts to capture Abu, including a process known as plastination, that keeps the animal very much alive, but almost dead.

He also provides numerous of disguises, and eventually takes Abu to the top of the Blackpool Tower threatening to drop him off, until he is saved by Nan and Harry.

Otto then falls of the Blackpool Tower, and to everyones shock, he survives. He is later seen showing off in front of Harry in the final song, and he is later presumabley let go or arrested by the police.

He is played by comedian Matt Lucas.