[Ingo hums in acknowledgement, thinking for a moment.]

You are right. I have never seen Captain Zisu's Zoroark use anything but normal, ghost, or dark moves. She is well-practiced at teaching Pokemon new moves, so she certainly could do that if she cared to...

[Does it mean that Zoroark cannot learn any other moves, or just that she had not wanted to use them? He cannot say. They never discussed that in particular.]