The Penguin and his crew
Half of Penguin's crew were mercs. Never trust a merc...
This is my portrayal of one of Batman's oldest foes. I know he doesn't have a mustache, but you know what? it's my portrayal. I'll do what I want. If you imagine his voice as the Nolan North version, the mustache sorta works.
The goons are obviously inspired by the Penguin goons in Arkham City, seeing as one of them is armored. According to the game, alot of them were mercenaries, so I was aiming for a militaristic look.
Now, guess who will be appearing next in the "Robin Investigates" series.