So, after a bit of talking with  N.M.E.-C.H.-A.S.E.R., this was an idea that popped up...

So basically..

His name's Dylan, and he's an Anthro American House spider. He normally starts at 1 inch, but can also shift in sizes up to eight feet tall.
Four, crooked, segmented appendages making an 'X'-shape from his back. Two between his arms and legs, and two between his arms and his head. These appendages are un-furred.
His shorts are jean shorts.
His "shirt" has cloth on the front and back, but not on the sides. This helps for his extra appendages that come out from his back.
Fur pattern is stripy. And it starts to get thinner on his limbs as it extends from the torso until it's bald at the end.

Add an extra pair of eyes, one eye next to each original eye, on the outside, equal size to each other, but smaller than the second set over the "default" set.
He has two 2-"toed", claws-for-toes, clawed feet.

One of his abilities is sizeshifting.
But he can also steal someone's size. Basically, swapping sizes. This is done by biting on his victim.
Another one of his abilities is shooting webs from his fingers. He can manipulate the webs like a soldering gun. Plus, while other people can't manipulate the webs easily, he can do so with ease, as the webbing doesn't stick to his digits.
||Oh, and he's got a penis length of 6-8 inches.||

Art by  682., coloured by me