User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-98.26.119.147-20140114220805/@comment-16281343-20140114222836

And what kind of info would they pass that will ultimately lead to the Gremory team's demise?

Rizevim wouldn't trouble himself just to satisfy the revenge of some Devils he doesn't have anything to do with.

And in the first place, Qlippoth or specifically Rizevim, doesn't care about anything else except making his dream come true. If making that dream come true doesn't include fighting the Gremory team then that's fine with him.