Ok, so  bearbun got me to play with bunnys...
And I think I might continue these two characters.

They is are brothers. Julian is 16 and David is 19.
They arn't blood brothers, they are step brothers, but have been together since Julian was 3 and David 6. They enjoy each other's company and have even gone so far as to do each other favors.

Julian is shy, and prefers to say indoors playing on his laptop, or his game station. When he meets people he has a hard time saying something, and often just says "hi" or some other quick thing. He always hides behind David at parties, even though his big bro is always pushing him to be more confident.

David is more outgoing. He is into sports in college, and is part of the peer coach directors of the University's swim team, "The Wet Otters".
He loves his little brother, and gets pissed when anyone so much as makes him cry. Maybe he likes his lil bro in more ways than he realizes.