i have a chopice of heroes, and have Fusha Keencrest...but she is listed as a scavanger hero, not Hissio

Fusha Keencrest is indeed supposed to be a Scavenger. Hissho and Yussho are two different species, and while Hissho are indeed a major factio and have their own hero faction, Yussho are only a minor.

This change was made with Supremacy dlc, renaming the minor faction Hissho to Yussho, and thus changing the hero over to Yussho as well.

neat, ok, guess the wiki is wrong then

The official wiki hasn't been updated since Vaulters came out, so it's 3 DLCs out of date. I'd suggest using the wikia.