Winner's pic of venetia-the-hedgehog of dA

Her choice is the Kineceleran (her default species). Notable species include:

- XLR8
- Helen Wheels

Their high speeds of more than 500 mph makes up for their lack of battle skills. The extreme speeds of Kinecelerans came from manipulating friction, making them able to run up walls. However, some Kinecelerans have no problems running on non-solid surfaces like ice and especially water.

More info: http://ben10.wikia.com/wiki/Kineceleran
http://aliens.wikia.com/wiki/Kineceleran