Pretty sure anyone could clearly see Shay's healing in factor as it healed the cut from the batarangs on his face... his bullet-clipped ear as well. So that's at least one other power of his that can be clearly observed besides invisibility.

[b]EDIT:[/b] Oh sure, when the half-Kryptonian Superman lookalike flies down into the camp uninvited he gets greeted with awe and almost immediate trust. But when [i]Shay[/i] comes uninvited into the camp he gets greeted by batarangs, bullets, and a string of what I can only assume are threats and insults in Chinese.

[youtube]https://www.youtube.com/watch?v=ZCVR_ajL_Eo[/youtube]

...Is it weird I find Xiu more attractive than even Starfire? Hmm, could be my inner [url=https://youtu.be/bHqKlAHwm2A?t=90]Spike Spiegel[/url] talking.