|Only Appearance:||The Lion and the Unicorn|
|Appears in:||1 Episodes|
Dennis was one of Red Claw's goons.
After Batman and Robin walked into a trap set by Red Claw in Castle Blairquhan, Dennis and another goon were sent to make sure the Dynamic Duo was truly done for. Though they thought so at first, they learned Batman and Robin were still alive when they were grabbed from behind and thrown in the water below.