Gunther was a minor character who made his debut appearance in Love, Love, Love, the first episode of Season Five. He is the boss of the Spotlight Diner, where Santana, Rachel, Dani and Kurt currently work.
He is portrayed by Christopher Curry.
At the diner, Gunther tells Santana she's late and asks if Rachel is the new waitress, receiving a patronising 'yes' from Santana, who introduces him to Rachel and whispers to her not to tell him if she's Jewish or black.
Gunther interrupts Rachel, Kurt and Santana's pledge to say the man at Booth 14 has requested the 'short one' - a.k.a. Rachel. He then asks if he can have Santana's box of Yeast-I-Stat, but takes it and walks away with it before she can respond.
- In the popular sitcom Friends, the manager of Central Perk, where Rachel Green works, is also named Gunther. His name could be a reference to Central Perk and Friends in general, as Glee has made several other references to the show.