Are hyenas carnivores?

Yes, hyenas are carnivores and scavengers. As a group, hyenas are well able to drive lions off a kill if they outnumber the lions. They will also drive off and take over a kill that is old enough to be classed a scavenging carrion. They have been documented as hunting and killing in their own right.

yes they would bite you if they had a chance
The striped hyena is an omnivore; all other hyenas are purely carnivores.
A Hyena is an omnivore. I hope I've answered your question!