The first one was that cat from the lord of the rings movies, but more likely a common troll, but most likely someone with no hair plus the scream was totally fake, and the time is wacky on that video.

The second one like abattior said is someone on pcp, you can tell by the walk its hitler, or a breakdancer, or maybe a friend of the two kids in the car.


OR

maybe aliens are really that spazed out.
from all the pcp.