Some fag who'll steal your bagel. Stay away from Sebastians.
Guy 1: Sebastian just stole a bagel from that random lady, the old woman on life support, and even the dead guy on the sidewalk. Fuck him. What the hell is wrong with him?
Guy 2: Everything.
The person with the worstluck in every story or movie. Is never listened to, never gets what he wants, and is usually brutally murdered. Can be used to infer about the ending of a real-life sebastian
"Wow, that Sebastian had a beautiful voice. Too bad he was killed by a war axe"
"Sebastian is a horrible plotter with a big ego fueled by Antonio. Gets blackmailed into nearly killing his brother, then is disowned"