Iceologer

The Iceologer is a character in the Anonymous Frog series and the main antagonist of Iceologer's Revenge.

Outside of Anonymous Frog
The Iceologer was first introduced in Minecraft Dungeons as a hostile mob. They can be found in the Creeping Winter DLC pack. Iceologers attack by summoning ice blocks above the player.

The Iceologer was included as one of three mobs in the Minecraft Live 2020 mob vote. It came second, losing to the Glow Squid.

Trivia

 * The Iceologer sometimes pronounces J's with a Y sound. It is similar to this joke, only reversed.
 * According to a disclaimer on the end of Iceologer's Revenge, it is revealed he is 'a bit crazy in the head'.