Oozer

is a mob that can be found mostly in swamps/water ,its speed is normal but he is extremely fast on water, though liquid slime stops him.

looks
is a 1x2 block transparent green-blueish-brownish slime with a lot of sticks/blocks attached to it, has 3 eyes

Attack
when he detects a player, he creates liquid slime that is slow as lava and flows 5 blocks away but slows you even more, then he shoots ooze to the player that deals 4 damage, he then takes the liquid slime if the target is dead/not found. comes in 3 sizes:

small: generates a 1x1 liquid slime block, has 2 hp

medium: generates a 3x3 liquid slime block area, has 10 hp

large: generates a 5x5 liquid slime block area, has 20 hp

Mega(commands only): generates a 7x7 liquid slime blokc area, has 50 hp

Drops
exp (2 and a half levels)

slime ball: 2-5 (50%)