Cinnabar

The youngest of the current batch of Sinners, Cinnabar is just over 450 years old! She still has trouble keeping it together sometimes, what with being oh so new to Hell and not knowing what she's doing, but she has Sapphire to help her out, and tell her what to do and how to do it! Boy, she doesn't know what she'd do without Sapphire. If it weren't for her, she'd be nothing! She'd be a nobody, and probably would have said the wrong thing to the wrong person, and gotten melted down into a jar on Boss' desk! But thanks to Sapphire, she is a SINNER! And not even the lowest ranking one! Not that she has anything against Aqua, of course! In fact, they're besties! Which is why they thought she should go to the surface with them on some very important business! Which Sapphire was VERY kind in letting her go! Man, Cinnabar doesn't thank her enough. Sapphire really is the best girlfriend ever.