Addison is a mild-mannered murderer who appeared in John Smith's past adventures as reviewed by Professor Copperbottom in the second series of his adventures.
Addison is a mechanic who works in a lobby house beside Tanner and Tyler's house. He was a very shy but humouristic guy who likes to create his own comedic alter-ego, The Alpha-Master.
He also watches comedy shows like The Freddie Artemis Show and Gag Reel Time!.
Afterwards, he become a monstrous being, known as The Perriclaverne. It was a giant mythical sea creature that has a shark-headed, crab-like claws and elephant-like body. According to Olly Alexander, that the Perriclaverne was a legendary creature from the Lovecraftian mythology.
In fact, Addison has no superpowers. But except, his notable abilities that he revealed soon. His main reference is from Captain Chaos from the Cannonball Run comedy franchise. He also says "Dun-dun-dun, it's HIM!" & "Gnnnarwwwwl!" He also murders any people by eating them with his teeth.
According to Olly Alexander, that he knows that Addison has being influenced from his character attitude during his high school years.
The Adventures of Professor Copperbottom
- The Unwanted (cameo)
- Professor Copperbottom in London
- Professor Copperbottom and the Frontyard Club