hq. is this a joke? >> you might not know his name, but you probably know his work. he co-founded the viral game hq trivia and the video app vine. >> officers went to colin kroll's apartment early sunday after his girlfriend requested a wellness check. >> police say kroll was found unresponsive in his bedroom. >> other texts started flooding in. i was like, oh, my god. it was totally surreal. it was totally, totally surreal. >> i found out about colin's death on twitter, just being dumbfounded. i remember kind of reaching out to other colleagues and friends and trying to learn what had happened. >> i always thought of him as a surprisingly approachable,