Color-changing Gel

Color-changing Gels are enemies in The Legend of Zelda: Oracle of Ages, first appearing in the Wing Dungeon. They appear in rooms where the floors are a solid primary color, which they blend in with, only becoming visible when they show their eyes to jump. They are invulnerable while camouflaged and unlike normal Gels do not grab onto Link, rather damaging him on contact. To expose them, Link needs to use the Roc's Feather to jump over the conspicuous tile in the middle of the room, changing the floor's color. This renders the Gels visible and vulnerable, though they will change color a few moments later.