cellphones are such a hipster thing . ! my 55 year old dad uses his cell phone more than I do <| sep |> thank you as well <| sep |> Have an upvote ! I chuckled for a good 10 seconds <| sep |> Doesn ' t Superman exist in this universe ? Why wouldn ' t he be involved ? Supergirl is in a different dimensionworld . While ArrowFlashLegends all are in the same world , the Flash only met Supergirl when he got lost phasing through dimensions . In that story , Supergirl helped him get home . But more importantly , Flash never met Superman and might not even know he exists . My guess is that the Flash realizes they need a heavy hitter , and he recreates his trip trying to recruit her . But he does it in such a way that he just has time to grab Supergirl .