Dominic Monaghan Dominic Monaghan

Dominic Monaghan's foosball-playing cameo in that ABC fall promo now seems a lot less mysterious: The Lost alum has officially joined the cast of FlashForward, the network's new action-drama premiering Sept. 25.

Watch the mysterious ABC promo

But with one riddle solved, another arrives: Who is Monaghan playing on FlashForward? ABC's press release conspicuously sidesteps the issue, and a network rep would only tell that his character's name is Simon. 

concerns the aftermath of the world's population simultaneously blacking out for two minutes and 17 seconds. Upon coming to, people realize they may have just had a glimpse of the future.

Since Monaghan was not in the original pilot, it could be that he is playing a character to be introduced later, perhaps someone with information about this worldwide phenomenon. Or maybe he is playing... oh, that's right, those of us who saw the complete pilot are not allowed to talk about that. Never mind.

Monaghan's appearance in the ABC promo initially triggered talk that Lost's Charlie would resurface, perhaps even alive, during that show's final season — a possibility that still remains.