Carina

"I present to you, Taneleer Tivan, the Collector"

- Showing Sif and Volstagg the Collector Carina is a Krylorian, who is an assistant to the Collector. She is portrayed by Ophelia Lovibond.

Thor: The Dark World
In a post-credits scene, Carina presented Sif and Volstagg to the Collector when they brought the Aether.

Guardians of the Galaxy
Carina is first seen sitting down, when The Collector threatens if she doesnt get to work, she'll end up with a similar fate to a past assistant to The Collector, who is in a cage.

She is later seen inviting Gamora to meet The Collector, and overwatches as he explains to the Guardians about the Infinity Stones. She is tempted by The Orb, and reaches for it claiming that she would no longer be Tivan's slave. She cannot handle the power of the stone, and is destroyed.