Character Spotlight: Shriek

Shriek was originally a part of my Batman Beyond Super-Post, in which I said this:

Shriek

Shriek first appeared in the Batman Beyond episode of the same name (1999); his first comics appearance was a mention in Batman Beyond [miniseries] #4 (November 2010).

But he has actually appeared since then, so he gets an entry all his own. 

His first actual appearance is Batman Beyond #21 (April 2013) and #22 (May 2013), in which he's an obstacle that prevents Batman from helping Max fight the Undercloud's Rebel One.

He later appears in Batman Beyond 2.0 #2-7 (August-November 2013) as part of Rewire's team, along with Spellbinder and Inque.