Oh - I almost forgot to post this, had it prepared and all...
When Cracked was looking for Less famous siblings of fictional characters I, of course submitted a few too.
First there's Fred of Nazareth (who made it into the main article):
Superman's unknown brother Averageman:
Another previously unknown brother of Jesus Christ:
While not *un*known - still two *lesser* known versions of Tom Servo and Crow T. Robot - Linkara's and Spoony's bots:
There's many Powerrangers you never have heard of - and with good reason:
And only few people are aware that Ghandi had also a brother - with Mob ties: