Kabegamirnpo

Itachi originally told Sasuke that if he gained the Mangekyo, then there would be three people who could handle it After the time skip in the series, Hatake Kakashi revealed he too had gained Mangekyo Sharingan Later it was revealed that Uchiha Madara himself was still alive, and was the "third" user in Itachi's statementItachi Uchiha's personal crow summoning had the power to use the Mangekyo Sharingan as well and he wielded the eye of Shisui Uchiha after his death Although his power was limited as a summoning, Itachi's Crow could still use the power of Kotoamatsukami, a powerful Genjutsu strong enough to trap anyone in an illusion and manipulating theirThat's just the way the Tomoe Seal of Itachi's Mangekyou Sharingan looks by default The various changes we've seen have simply been due to us witnessing it in the middle of it's transformation (when we get our first glimpse of the Mangekyou Sharingan here) , or to indicate strain on the eyes as the