Board Thread:General Discussion/@comment-26408630-20150313212317/@comment-14512598-20150408062644

Yagirl mabel wrote: Has anyone suggested yet that the Stan Pines that died in a car accident was his brother, and that was Grunkle Stan's reasoning for bringing him back? (obviously because his brother died at one point). Unless we've fully concluded that Grunkle stan's real name IS Stan Pines, then this theory may be (almost) valid.

Everyone thinks the car was a cover-up. The portal has never been described to bring people back from the dead. The portal almost certainly is able to be used as a doomsday device, and the first brother obviously constructed it at one point. Presumably, he got sucked in.
 * if it is, i'd like to continue. I think if his twin brother is Stan Pines, who died in the intentional car accident, then it must have been some sort of government worker who killed the brother. but I still havent come up for a reason as to why Grunkle Stan pretended to be his brother for so many years.