Source: flickeringmyth.com

4. King Trench

The Trench scare me to my deepest core.

I've never liked those freaky angler fish (probably rooted back to watching Finding Nemo a lot), and The Trench take that fear and map it onto a group of villainous monsters. Not much is known about the Trench, but they were once a kingdom of Atlantis. When their territory was cast to the bottom of…well…a trench, they evolved in order to cope with the environment they were dealt, which in this case meant evolving into bug-eyed aquatic tooth nightmares.

They eventually surfaced, and Aquaman had to punch each one in the face until they stopped being a problem. Their leader, King Trench, is basically just a bigger, scarier Trench. Which is already scary, so that’s a big upgrade.

Why he isn't more popular: I don't know. This guy is a scary nightmare monster who fights Aquaman. He's pretty rad.