So we know of Gerald, Maria and Eggman (NEGA unknown). Anyone else?
Gerald and Unknown Woman
/ l \
Unknown Man/Woman and Unknown Kid Shadow Unknown Kid and Unknown Man/Woman
/ l l \
Eggman Unknown Kids Maria Unknown Kids
l l l
X NEGA(Maybe) NEGA(Maybe)
by: "The Caminator" 00:15, March 4, 2012 (UTC)
Why can't you make a blog out of this? BlazeChance1 00:17, March 4, 2012 (UTC)
The Robotnik family is scarcely known, I think the best family tree out there is the Archie Comics Robotnik and Eggman family. Serious Sam 
Heavy 00:29, March 4, 2012 (UTC)
You can't rely on the Archie Comics Robotnik family tree. Their story is different. Heck, they have Snively in their family, who is never in the games. Robotnik really was never meant to mention any family members, he's a villian so of course he never tells something as random as his family history.98.233.130.73 22:58, March 16, 2012 (UTC)
According to this, which is barely readable, Shadow is Eggman's Uncle :)!
by: "The Caminator" 02:08, March 17, 2012 (UTC)