Wreav Is a Jerk

Urdnot Wreav is a jerk.

Urdnot Wreav quotes:

"...I suggest this salarian show some [respect] by starting with my name: Urdnot Wreav."

"Oh, I'm deadly serious. You need our help? Then here's what you're going to do... Cure the genophage."

"Those females are immune to the genophage, and they belong to me!"

"I never like talking to salarians. Not unless they’re begging for their lives."

"As the one who cured the genophage, my word will be law over all krogan clans."

"Krogan don't waste time voicing opinions. We just crush everyone else who has one."

"You’re too polite Shepard."

(On Earth) "Shepard. We thought we’d drop by and pull you humans from the fire. In return, I want to own the place you call 'Australia'. Just kidding. For now."

Here's a link to a walkthrough for saving Wrex on Virmire in Mass Effect 1:
http://masseffect.wikia.com/wiki/Virm...

In ME1 you need to make sure Wrex doesn't die on Virmire to avoid having Wreav leading the krogan in ME3. To do that you need to make sure you either:

Retrieve Wrex's family armour
Have enough charm/intimidate to persuade him to help destroy the base
Choose not to recruit Garrus on the Citadel and do only Feros and Noveria before Virmire (hence no Liara in party before Virmire)