SPOILER WARNING: This article contains major spoilers for "Enter Zoom," tonight's episode of "The Flash."
"Enter Zoom," tonight's episode of "The Flash," took another trip to Earth-2 and introduced viewers that world's Green Arrow -- with a twist. As Harrison Wells (Tom Cavanagh) thought back to the last time he saw his daughter Jesse (Violett Beane), a newscaster on the program he was watching announced that Green Arrow had unmasked himself as Robert Queen, who took up vigilantism after his son Oliver was killed when their boat sank and he was stranded on an island for five years.
If you think that sounds familiar, you're not wrong. In addition to swapping Oliver out for his father Robert in Green Arrow's origin, the story homages Batman's storyline in Geoff Johns and Andy Kubert's "Flashpoint" event. In that comic, Flash creates an alternate reality where Bruce Wayne died in the alleyway shooting, and his father Thomas Wayne became Batman instead.
— The Flash (@CW_TheFlash) November 11, 2015
In addition to this fun little Easter egg, "Enter Zoom" also saw another big development for Barry. During Barry's premature attack on Zoom, Zoom paralyzed Barry. While this will likely be a temporary state for him, it renders him unable to use his speed, at least for the moment. However, Wally West's (Keiynan Lonsdale) arrival on the show opens up the possibility for Barry to assume a mentor role, with Barry teaching Wally how to use his speed so that maybe he can take down Zoom. In "The Darkness and the Light," Wells told Barry he might have more to impart about being a speedster than Jay did; it looks like Barry might have that chance in the upcoming episodes due to this injury.