Vex

Vex mind that seeded the code of the Infinite Forest. Simulated copies of it were destroyed many times by Guardians.
Vex minotaur that escaped the Prison of Elders and took refuge on Nessus.
Minotaur slain by Sjur Eido and later resurrected and Taken
A Vex hydra in the Ancient's Haunt on Nessus.
A Vex minotaur in the Grove of Ulan-Tan on Io.