Slide's dad was really surprised when he changed his young son's first diaper as it was full of slimy, slippery, green goo. Panicking they called for a doctor who quickly found the source of the ooze: Slide's feet. With no obvious deleterious effects, he grew up a relatively normal life (although using many pairs of socks).

Strength
Can create copious amounts of slippery slime that Slide can use to move extremely fast or trap people (by surrounding them in slime that they can't cross).

Strength Source
Innate ability.