The Fractal Lifeform is an alien that exists within the Interstellar script.
The Ice planet that orbited Pantagruel had a but a shell of ice around a subsurface ocean/land global area. On it, small, tree-like creatures lived. They were a fractal kind of life and could reassemble themselves and make other life be part of them. They were eventually destroyed by a small black hole that disrupted the planet's orbit, causing it to careen beyond Pantagruel's event horizon.