Don't know if anyone here has ever watched Stargate, but I've found that Jaffa names make excellent additions to Klingon names:
- Drey'auc (female)
- Gerak (possibly used for a Cardassian if you don't want Garak coming after you)
- Ishta (female)
- Ka'lel (female)
- Yat'Yir (could maybe work for a Gorn too)
Some Goa'uld names I can also see working for Romulan characters too:
Check out Deferi names on http://www.defera.org/deferi-names.html for the off-chance (but very balanced decision) someone wants to become Deferi, or make a Deferi boff. There are lots of male and female names there.