It's a wonder how many weird games there are about player characters who are made of goop. I have been watching Youtube videos of them for the past... hour or so? THANKS A LOT YOU NERDS (Slopp is her own lady and none of her mechanics are even remotely similar to de Blob, though! She is offended at the accusation.)
There are some things about Slopp that didn't make it into that gif, one of which is that the max size is four times the player's normal size, and that there's some rudimentary effort to scale the jump height to the player so you can't get places you shouldn't be by being big/be locked off from the main path by being small. Not as significant scaling for the horizontal speed, though.
If you're in a place where there's a lot of water, you can squeeze the water out of her like a sponge by holding the spindash key. It only works underwater though, and has a minimum size of half the regular player (to replace spindashing under things).
also yayyy >w< i wasn't going to make sprites for her because i'm very busy r/n but i might make a design at some point