For you Yrth-people, this is kind of like a kangaroo, kind of like a llama, but not really very much like either of them, in all honesty. Most of you will probably never see a kangarllama because they don't originate on Earth and are very shy. So despite the fact that they often use their wormhole-making abilities to beam themselves to Earth and graze on our delicious grasses, when they detect humanoid activity in the area, they will typically flee back into the ethers from whence they came.
Kangarllamas aren't really evil per se. They are on the Great Big List of Those Who Are Up To No Good primarily because we think it is rude for them to eat up our delicious Earth grass with no regard for the local residents and their feelings on the matter.