Sebastian as a teen. Backstory: Like Summer, growing up Sebastian was obsessed with science and space, and reading about aliens. When Sebastian found out that Summer comes from an alien lineage, he becomes smitten and wants to know everything about her. When Summer realizes that she doesn't know much about her alien lineage, she makes it her life mission to build a space ship and travel to Sixam. Perhaps Summer will allow handsome Sebastian along for the ride! #kelseynotsoberry