Sese's Bad Tom

I've been playing Undertale recently, so I ended up compiling this: Sese confronts their rival, Sans! Although, this type of comparison is rather noticeable in the Len'en community.
There are two Easter eggs in the image, one of them not as noticeable as the other.

Sese Kitsugai and the easter eggs belong to the Len'en Project by JynX, and Sans belongs to Undertale by Toby Fox. Background is from Stage 2 of Subterranean Animism by ZUN.