Bayge is the eldest of the Goron Blood Brothers, consisting of him and his brothers Heehl and Kabetta. Bayge, along with his brothers, is passionate about training in difficult feats of strength and endurance. He lives with the rest of his brothers in a house in southern Goron City, which is now abandoned and left with a sign saying they have gone to the Gut Check Rock to train.
Bayge is involved in two Shrine Quests. One is the "Test of Will" Shrine Quest at Mount Nabooru in the Gerudo Highlands. Bayge and the other Goron Blood Brothers have traveled to their ancestral training ground to train themselves to withstand the heat in Goron City. Bayge and the others challenge Link to join them by sitting in a ring of fire to see who can withstand the longest. Bayge is the last Goron to collapse before Link is declared the winner. The brothers then challenge him to a harder contest by standing on an even hotter platform, with Bayge commenting that clearing the challenge is said to reveal an Ancient Shrine. Beating both of their contests reveals the Joloo Nah Shrine.
Bayge is also involved in "The Gut Check Challenge" Shrine Quest at the Gut Check Rock in northern Eldin Canyon. Bayge is found sitting on the steps to the Gorae Torr Shrine atop the pinnacle, and refuses to let Link approach as the Shrine's platform is a sacred place to the Goron Blood Brothers. However, Bayge decides to let Link through if he can clear their training exercise, the Gut Check Challenge, wherein Link must climb the pinnacle while collecting enough Rupees. Upon clearing the Challenge, Bayge happily appoints Link as an honorary Goron Blood Brother and allows him to approach the Shrine. Bayge will then offer a much harder course called the Super Gut Check Challenge.
- "Is that....Grandpa?" — Heehl (Breath of the Wild)
- "If ya cleared my older bro's training... you must be pretty impressive!" — Heehl (Breath of the Wild)
- "We are currently training at Gut Check Rock north of Death Mountain. Come watch us train at Gut Check Rock!
- Bayge, Heehl, and Kabetta" — Signpost (Breath of the Wild)
- "This is our ancestral training ground! Us three Goron Blood Brothers are in the midst of a contest of endurance!" — Bayge (Breath of the Wild)
- "It's too hot to handle in Goron City...so we came here to train ourselves..." — Kabetta (Breath of the Wild)
- "It's said that passin' this test will reveal a shrine...or some such!" — Bayge (Breath of the Wild)
- "I AIN'T MOVIN' A MUSCLE, BROTHER! Not a single, well-defined muscle! This is a special platform! Sacred even! Only real Goron men, as decided by us three Goron Blood Brothers, are allowed." — Bayge (Breath of the Wild)
- "But I gotta say...ya do seem like a real man of action. Almost like you have a Goron air about ya. I like it! SO WHAT ARE YA WAITIN' FOR, BROTHER?! GET TRAININ'! Yeah that's it! If you can clear our hard-core training program, I'll move outta your way!" — Bayge (Breath of the Wild)
- "UNBELIEVABLE!! You've passed our training with the grit of a true Goron, my brother! In fact...you've earned the right to call yourself...the fourth Goron Blood Brother!! As promised, you are now allowed to stand on this sacred platform of Goron manliness. A real honor, I know. You're officially one of us now! Our true Goron brother, brother! Welcome to the family!" — Bayge (Breath of the Wild)
- "Lucky for you, I've prepared a training program to help you ascend to even greater heights! I call it... Super Gut Check Challenge!!" — Bayge (Breath of the Wild)