No cage can hold him!
(
Captain Howdy,
Sun 24 May 2020, 22:01,
archived)
how about a houdini challenge?
Upside down in a tank of water while wearing a strait jacket
(
Mehitabel_Itrang,
Sun 24 May 2020, 22:06,
archived)
Silver bullet.
You can always argue that he returned to his human form after you struggled with "a terrifying beast from legend".
(
Captain Howdy,
Sun 24 May 2020, 22:19,
archived)