Blueglass (a.k.a YSG a.k.a Yellow Shirt Guy a.k.a. Yolo Swag God) is the unofficial mascot of GDQs with a contagious laugh who somehow seems to be in the audience for every single run.

Blueglass can be found at:

Ecco the Dolphin (1992)GenesisAGDQ 2013Blueglass0:41:46
Ecco the Dolphin (1992)GenesisSGDQ 2014Blueglass0:36:46
Ecco: The Tides of Time (1994)GenesisHard ModeSGDQ 2013Blueglass1:26:29
Mr. Driller Drill Spirits (2004)DSBlindfoldedAGDQ 2014Blueglass0:01:38