The Teen Titan's reactio to bat-Man vanshign. Robin would obviouly be calmer coz he knows the guy.
Woudl Starfire freak out or ask some naive question about him being magic or be scared?
Woudl Raven reply with a sarcastic thing such as 'Show-off' or somethign else?
Woudl Beast Boy and Terra freak out or naively ask if it's magic or find it annoying?
Woudl Cyborg freak out due to his low IQ and ponder how one ordinary human can vanish in a one second.