Obito Uchiha's story is riddled with traumatic moments and tough times that ultimately led him to become completely numb and turn into a villain with a grudge. He is key in implementing the Tsuki No Me (Infinite Tsukoyomi) plan, which aims to put the entirety of the ninja world under an illusion to end all wars. He goes through several iterations and changes in the story.
SPOILERS BELOW!
He begins as a child of the Uchiha during the third great ninja war.
He is part of the three-person team of Minato (Naruto's dad) that includes himself, a young Kakashi and his crush, Rin Nohara. During a fierce battle, half his body becomes crushed under a rock, and he gives one of his Sharingan eyes as a gift to Kakshi, who lost his eye in the battle. From there, we find out he in fact didn't die, and has been rescued and revived by a super old Madara Uchiha, who is just barely alive, but teaches Obito what he knows and bonds him to a White Zetsu (a copy of the 1st Hokages cells, allowing a half body transplant that returns him to be fully able to fight once more. Madara convinces him to follow his plan, which involves forming a group to take all the tailed beasts and summon the Ten Tails. This would allow Madara to become the host of the Ten-Tails and project his power onto the surface of the moon.
In between all those plans, Obito goes out to find Rin, sensing she's in danger. He comes at the exact moment Kakashi is manipulated into killing her by Rin herself to avoid releasing the three tails upon Konoha village. Kakashi faints after awakening his Mangekyo Sharingan and Obito goes crazy, killing every ninja there.
After that, Obito continues as the Masked Man, controlling the Nine tails to attack Konoha village, killing Minato, his old teacher and his wife. At this point they seal away the Nine tails half in Naruto, half in Minato as he is dying. Years later, Obito becomes Tobi, and manipulates Nagato, Pain and Konan into using their newly formed Akatsuki organization to execute Obito's plan of piece.
He successfully gets most of the tailed beasts but only summons a partial Ten Tails due to Naruto still having Kurama and Killer B still having 8 tails Gyuuki. He becomes the ten-tailed jinchurikii, then gets backstabbed by a newly resurrected Madara, who has brought himself back to life in the prime of his power. Eventually, he gets Naruto'ed, convinced of the error of his worldview and grudge-filled past.
In this form of Obito, he is still claiming to be Madara and has outfitted himself for the Fourth Shinobi war. He uses Madara's fan weapon and a white mask with three tomoe around in a circle to indicate his power of having acquired one Rinnegan. This figure is a nice battle-marked representation of Obito, and I have to say it's done very well like the others. His accessories are plentiful, his articulation is great (minus the waist), and the paint is clean.