-6 Dimensional: Interstellar is a 6D being allowing him to travel through all parallel universes and also in time in any of those universes

-As you may have imagined, this means that Interstellar can control time on omniversal scale and

-Growing Body: Interstellar starts of at about the size of a moon and by using quantum fluctuations, he is able to increase his size and mass at will to near unlimited sizes. He can become as large as planets, up to sextillions of light years in height.

-Irrelevant Speed: The concept of speed doesn't exist for Interstellar. At these scales, distance doesn't matter for Interstellar, as he can grow to be able to hold the Omniverse. He can act, move, react, perceive and travel at speeds that transcend the concepts of speed.

-Infinite Strength and Durability: As you may have guessed, Interstellar has unrivaled strength on omniversal scales and has durability on the same scale as well. His strength increases with his size and so does his durability and endurance which all can become infinite.

Dark Energy: Interstellar tends to pump his body with dark energy allowing him to create blasts of dark energy and create dark matter constructs. With dark matter in his body, his strength and durability increase, as well as his senses and stamina.

Antimatter: Interstellar can also create antimatter blasts and antimatter constructs on a omniversal scale.

Flight