Old Man Gerson from Deltarune as a M.U.G.E.N Character, he's a boss character that uses the six buttons. In order to defeat him, you need to attack him for a certain amount of time until he starts to partially glow, attacking him while he's glowing will end the match and defeat him.

Here are some things to take note:

The Green Soul Wave will be replaced with a Rude Buster-like attack if Gerson is either fighting more than one opponent or has an ally on his side.

If you have defeated Gerson in the previous round, the next one will have him in his desk. Waiting a few seconds will end the round and the opponent will win, but you can fight the Hammer of Justice again if you hit him while he's in his desk.

Gerson has a Tag-Team like gimmick if he's paired with a partner in Simul mode: if his teammate is at low health, he will throw a hammer straight into the opponent, teleport to the center of the stage and heal his teammate. The only way to make him lose in this mode is to defeat his teammate starting at round 2.

Included with the character are two bonus palettes for Warioman's Woody and RoySquadRocks' Shovel Knight.