The trailer show's he's making a team of all the major villains
so you won't miss him.
I hope that includes his Shark Guy.
Okay I must have missed a few episodes of Duck tales, but are we talking about Jabberjaw?
There's a great line in the episode 'The Infernal Internship of Mark Beaks' where Scrooge and Flintheart are conspiring against Mark Beaks. Flintheart's overly elaborate plan keeps involving pools filled with sharks, which Scrooge complains about the practicality of acquiring. Flintheart says "Nah, I've got a great shark guy." Implying that he has a regular smuggler for sharks in his various schemes.