This purple guy has an unusual hobby: Cursorwatching. Try hovering the mouse cursor over various parts of the screen and see what reactions you get. Not all areas produce reactions though - why don't you remix it and add some?
NOTE: Because of all the loves and faves, the love, fave, remix, and views areas have shifted... :O I'm too lazy to fix it, but I thought I'd at least explain it. The mouse sensing code is all @pizzzapi. My contribution is making an animated guy instead of text. The animation is based on @-CoolBear-'s excellent project Interactive Bear!: https://scratch.mit.edu/projects/463347380
