Claire

Claire is Shorty's younger sister who's so silly and first appears in Sift Heads World: Act 4: Cold Memories

Sift Heads World Act 4- Cold Memory
Claire is kidnapped by the Human Trafficking Organization, so Vinnie and his gang travel to Russia to save her.

Sift Heads World Act 6- Illicit Association
Claire was registered with the Women's Shelter of Chicago, which can be visited. However, the receptionist will not allow any member, including Shorty, to visit her.

Sift Heads Reborn
In Sift Heads Reborn, her apperance in Act 4 remains, but the woman's Shelter of Chicago is not present in Act 6, effectively cutting her role in the Act 6.

Takedown
Claire is invited to live with the gang by shortly after Chapter 7 (The events of Sift Heads World Act 7 - Ultimatum) and can be interacted with to buy new furniture for the safehouse in Takedown mode. She can also be used as a powerup in Takedown while completing contracts - a powerup exclusive to Shorty. When activated, Claire will use a car to run over several enemies, instantly killing them.

Background
She was born in 1991, years after Shorty.

She was kidnapped by the Human Trafficking Organisation, an organised crime group based in St. Petersburg, Russia, specialising in the purchase and selling of people, espically women. Claire was rescued by the bounty hunters and was registered in the Women's Shelter of Chicago, which appeared in Sift Heads World: Act 6: Illicit Association. It is assumed that this is still the case in Sift Heads Reborn before being invited to live with the gang.