This old version of Pepperman appear in the Halloween Demo 2018(demo 1)being a lot bigger than Peppino then in the final game.

He also appears to work in the Mansion if modded into the SAGE 2019 Demo where instead of battling the player directly, he chases them down in a chase segment. On the way, there are many Pepper Blocks that only he could break by charging into them. Once reaching the end of the chase segment, he slips on a banana peel that is placed at the end of the corridor, causing him to drop the key, the tile sets are also broken in almost the end of the corridor.

In the Halloween Demo 2018 (demo 1),he waits for the Peppino on top of the tower and would stomp his feet before attacking. Pepperman's only attack is his charge which the player could jump over his attack or charging into him to have a chance to attack Pepperman when he's vulnerable(He could also be shortly stunned by stomping on him).When getting hit for amount of time, he starts to change colours from red to orange🟠 to pale white⚪ and after that one more hit he gets defeated.

The information are from the Pizza Tower Wiki

heres the link : https://pizzatower.fandom.com/wiki/Pepperman/Pre-release