Teizen Uchiha

Teizen Uchiha is the identical brother of Ryo Hyuga. He has the same ocular prowess and jutsus as his brother. The only exception is that Teizen's right eye developed into a Rinnegan while Ryo's left eye developed into a Rinnegan. Along with his twin, he is the progenitor of the Senrigan (NejiHyuga2). He also has the genes of both Senju and Uchiha Clans allowing him the manifestation of the Rinnegan. Along with his brother, he also is a fast learner in the c:naruto:Academy.

Early Life
Enlisted into the Academy at age 4, he was the third fastest learned behind Shikazu Nara and his brother. He also mastered all jutsus in just a year and two weeks. He was enlisted to Team Inojin with his siblings and they were hailed as the strongest team in Konoha history.

Chakra
Teizen has massive chakra since he also is a pseudo-jinchuriki. At age 5, he had the Yang half of the nine Tailed Beasts sealed into him which granted him Six Paths Sage Mode. Later on during a group training with his siblings, he awakened Six Paths Tenseigan Chakra Mode by combining Six Paths Sage Mode and Tenseigan Chakra Mode. Teizen has twenty Truth-Seeking Ball ten each from Six Paths Sage Mode and Tenseigan Chakra Mode. This is less than Ryo probably because of him having less chakra and quality of Otsutsuki chakra.

Dōjutsu
Teizen was given the name of Uchiha because of his blood. He also is a Hyūga which gave him the Byakugan.

Byakugan and Tenseigan
At birth, Teizen's Byakugan was active and ready to be used. The Tenseigan needs time to mature and will be ready to be used when Teizen is 6.

Tenseigan Chakra Mode
Immediately after maturation, the Tenseigan Chakra Mode can be utilized. Teizen's Tenseigan Chakra Mode grants an outfit similar to Ryo's Tenseigan Chakra Mode. Teizen can use a partial Chibaku Tensei in this mode.

Sharingan
Teizen's Sharingan awakened during his first encounter with Mitsuki with his siblings. He unknowingly awakened his Senrigan at that time as well. However, he couldn't use the Tenseigan and the Sharingan simultaneously. After supposedly sealing Mitsuki with Six Paths — Chibaku Tensei, Teizen went back to train with his siblings which upgraded their Sharingan to three tomoe.

Mangekyō Sharingan
The three siblings together awakened the Mangekyō Sharingan when their father died. Almost instantly, they could use the Amaterasu and Blaze Release: Kagutsuchi. They also could use the genjutsus Tsukuyomi and Kotoamatsukami. They also awakened the Susanoo without any training: Ryo and Teizen conjured their Final Susanoo while Shiena conjured a Perfect Susanoo because she awakened a Rinnegan in both her eyes.

Eternal Mangekyō Sharingan
Teizen overused his Mangekyō Sharingan during the second confrontation with Mitsuki. He repeatedly strained his eyes using Blaze Release: Kagutsuchi. When Ryo fainted from strain from using the Kotoamatsukami on everyone on Japan, he insisted that they trade eyes, awakening Eternal Mangekyō Sharingan. Their mother performed the surgery with Shiena acting as anesthesiologist.

Rinnegan
At the time when Teizen awakened the Mangekyō Sharingan, the Rinnegan also awakened, manifesting in his right eye. His abilities are the same as his brother just reversed.

Senrigan
The Senrigan is considered the second most powerful dōjutsu as it is the Sharingan and the Tenseigan both of prestigious lines. This dōjutsu gives you two chakra modes: Senrigan Sage Mode and Senrigan Chakra Burst Mode.

Senrigan Sage Mode
The Senrigan Sage Mode is basically the heightened version of Tenseigan Chakra Mode. Just like Tenseigan Chakra Mode, you can infuse your Truthseeker Orbs with chakra which changes color to cyan green, red or magenta depending on the amount of chakra infused.

Senrigan Chakra Burst Mode
Teizen has yet been able to attain this enhanced version of Senrigan Sage Mode.