Q-356

Q-356 is a small planet in close proximity to a black hole and P-4376.

Beast Wars Neo cartoon
In a plot to have the Maximals be absorbed into a black hole, Magmatron had the Dinosaur launch a missile at Q-356, altering its trajectory so that it would crash into P-4376. It did so, speeding up the planet's descent into the black hole.

Treasure Planet
Q-356 was a small planet in close proximity to the star and orbited with P-4376 100 light years away from a black hole in the Andromeda Galaxy.