Chelsea Gateway is a pre-made future Sim living in Oasis Landing, from The Sims 3: Into the Future. She lives with her Plumbot roommate Gladys, although she is enemies with her. She can be made playable by marrying her, or asking her to move in.
Like all pre-made Sims from Oasis Landing, she has the Future Sim hidden trait. She has mastered her Advanced Technology skill and has 4 skill points in Laser Rhythm-a-con.
- Her name and looks may be a spoof of Chell from the Portal series of video games.
- However, her character's description and several of her traits are similar to GLaDOS's background and personality from the same game, Indicating a role reversal spoof from the Portal series.