Sebastian has always happily lived in the shadow of the people he's clung to. With no one left, only time will show if he'll finally cast his own shadows.
Bastian would love everyone to think he's easy-going down to the bones. Truth be told, he's on edge most of the time, though he's spent a great deal of time learning how to cover that up. It's all in the bluff, his brother used to say. Bastian has a mildly adventurous streak in him, but he squelches that often in favor of keeping a low profile and keeping himself safe. He laughs easily, and when he's on a roll he can come off as quite charming in a humble sort of way.
Bastian is rarely seen without his guitar, which he carries around in a beat-up old hard case. He has a pack and a few changes of clothes, but they usually stay stashed wherever he's sleeping.