Mogo is a sentient planet and a member of the Green Lantern Corps.
Mogo is a sentient male planet living in Frontier Space. For countless millennia, Mogo trapped evildoers on his surface until they reformed or didn't, including crews of Vrashay pirate ships, warships of the Cardonian Horde, space clippers of the Tarkoni Marauders, and Arrkaddy Slavers from Mir. Due to some form of awareness, Mogo knows what happens anywhere on his person and can change surface conditions, such as part several trees or alter mountain ranges. At some point, a non-evildoer named Saint Walker began to reside on Mogo. In the present, Shyir Rev's power ring chose Mogo as his inheritor. Walker came into possession of the ring.
A wandering asteroid traveled through space and threatened to destroy Mogo. Luckily, Hal Jordan's group happened to trace Rev's ring and stalled the asteroid's impact to six hours. Mogo spared Jordan's life, saved Kilowog, captured Grood, and then safely disabled the stolen Interceptor. Jordan eventually realized the ring chose the planet itself, created a pit, then tossed the ring inside. Mogo took possession of the ring and destroyed the asteroid.
Using the power of the ring, Mogo was finally able to communicate with the group and thanked Jordan, for allowing him to save himself before he took pride in being chosen as a lantern, and pledged his aid to whenever it was needed. He then told the lanterns that he traps villains on his surface until they reform and that he will keep the prisoners for the time being.
Sometime after, Saint Walker spoke of a dream to where he would come to Mogo to find a savior to defeat the Red Lanterns, Mogo instructed him to climb a steep summit and to not take a path of vengeance. While Walker climbed, Mogo briefly engaged Atrocitus' ship but failed to stop him as he escaped with one of the prisoners.
Once Saint Walker became the first Blue Lantern, he and Mogo flew to the Maelstrom and aided Kilowog in repelling the Red Lantern armada. Mogo neutralized several warships but even he was not enough to penetrate Shard's shield. Going on a hunch, Kilowog tossed Saint Walker in front of Mogo's beam. The beam was supercharged and crippled the armada in one blast.
- Planetary lordship: Mogo is a living planet who can control its terrain. Mogo has used it to split the trees to form a path and raised mountains to stop the escape of the castaways.
- Green Lantern Power Ring: Having been bestowed the green lantern ring, Mogo used it able to destroy an incoming asteroid that was going to destroy him. Using the power of the ring, he became able to speak and used it to introduce himself and express gratitude to his saviors.