The Radiant Protector is a Legendary pet in Bubble Gum Simulator. It can be obtained by opening a 600M Egg. The chance of hatching it is 1 in 80,000 (0.00125%), or 1 in 40,000 (0.0025%) with the Lucky Chancesgamepass.
Trivia
This pet's design was inspired by The Radiance from Hollow Knight.