I think Singed safely had Graves killed at 4:45. Good demonstration of Fizz' abilities, but I don't think that was a shining moment of heroism.
Edit: Oh hang on, let me be generic since everyone seems butthurt over feedback on page one. Cute! He looks cool! Water pun! Okay guys, upvote me.
Also, while I have this spot: Phreak. Say "Playful Trickster." You don't have to say "Playful Slash Trickster" every time. We won't be confused and stumble blindly upon getting him when we don't see it without the slash. It just sounds awkward and clunky to hear sixty times in one video.