Gelby is a giant muscular Bianky.
Gelby first appear in Level 4 in Adults mode. They appear through out the game trying to defeat Joe.
Two Gelbys also appear in the anime guarding Silvia's room, though Joe never battles them.
If he throws a rock at you, then Slow before it hits to dodge it. If he pounds his chest, duck and he will jump over you and then become confused and susceptible to attack. If he draws his arm back to punch you, quickly jump over him to expose his vulnerability.
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