Hatake Kakashi and Obito Uchiha's MS

RIP Obito Or so we thought
Obito Uchiha gave Kakashi one of his sharingans.

_{"During the time skip, Kakashi further improved his Sharingan by developing his own Mangekyō Sharingan through undisclosed means. With it he can perform Kamui, a technique that sucks everything within a small area to another dimension. When he is first seen using Kamui he lacks proper control, leaving him prone to either hitting targets he was not aiming for or missing completely. He improved his skill with Kamui by the invasion of Pain, seen when he successfully sends fast-moving projectiles to another dimension with it. Kamui's chakra requirements are even greater than those of the standard Sharingan, such that he has to be hospitalised for a week after using it three times in one day. Despite Kamui being his only known Mangekyō Sharingan technique, he is familiar with Tsukuyomi, Amaterasu, and Susanoo. He is also aware of the risk the Mangekyō Sharingan poses to the user's eyesight, though he has never shown signs of deteriorating vision."} ~ [link]

Masashi Kishimoto - Creator of Naruto, Kakashi, Obito
~Theos-Kengen Editing and Style