UNDERTALE/Moldsmol
From StrategyWiki, the video game walkthrough and strategy guide wiki
Overview
Moldsmal is a wiggly, jiggly piece of jello that appears in the RUINS, the WATERFALL, and NEW HOME. As you can imagine, he's easier to beat than you'd expect.
Appearance
Moldsmal looks like a piece of jello. That's it.
In the Game
Neutral Route
Like most monsters in the game, you can kill, spare, or be killed by Moldsmal. If you choose to spare, see below.
Genocide Route
Kill it.
Pacifist Route
You can spare it immediately. You're good, bro.