Oh, that one. We neutrinos don't discuss them much; they're a tad too eccentric, even for us.
I will tell you that they're really not particularly welcome among decent particles, as you can see from the diagram below.
By the way, I don't see what's so odd about that omega character. Looks alot like a regular old antiproton to me (about the right mass and charge), but then, I'm not familiar with all these characters.