Quick n' simple ref for my krogan lady, Fexis of the Raik clan.
She's still pretty young ('only' around 150), as evidenced by her headplates, which are just starting to fuse together. She is infertile, and quickly grew frustrated with being expected to sit around on Tuchanka and babysit (and later serve as a meatshield for the mothers).
She's a sex worker and finds her job quite satisfying; she's worked her way up from a brothel to becoming a rather popular dominatrix. Right, who wouldn't be submissive for a terrifying krogan lady.
The gold 'stripes' are just painted on; she paints her nails, too - they don't always have to be pink, but she likes to pick colours that complement her hide.
Krogans are property of Bioware