By A Mystery Man Writer
Damian Wayne - Batman Wiki - Neoseeker
Detective Comics #434 - The Spook That Stalked Batman; Riddle of
The Spook, Batpedia
Batman, Batman Wiki
Batman Vol 1 276, DC Database
Batman is pretty insane and can only convince teenagers to team up
Batman: Spook, DC Database
14 Creepy Bat-Villains Not Named the Joker
Spook DC Database+BreezeWiki
Robotman (Cliff Steele) - Wikipedia
What's your opinion on Lock-up : r/batman