No, Obito is not Madara. Obito Uchiha is a former member of the Uchiha clan who was believed to have died during the Third Great Ninja War. However, he was later revealed to have been manipulated and used by Madara Uchiha, who was a legendary and powerful ninja. Madara is a different character who played a significant role in the history of the Naruto series, and Obito's actions were influenced by Madara's manipulation, but they are not the same person. **

There is no definitive answer to this question as Madara Uchiha's sexual orientation is not explicitly stated in the Naruto series. Some fans speculate that he may be homosexual based on his close relationship with Hashirama Senju, but this is open to interpretation. Ultimately, it is up to individual viewers to form their own opinions on Madara's sexuality. **

It is difficult to predict with certainty whether Madara will kill Sasuke, as it depends on the storyline and the decisions made by the creators of the Naruto series. However, in the series, Madara has shown a strong desire to manipulate and use Sasuke for his own purposes, rather than outright killing him. Ultimately, the outcome will depend on the direction the story takes and the choices made by the characters. **

Yes, Tobi is actually Madara Uchiha. Tobi initially presented himself as a goofy and bumbling character, but it was later revealed that he was actually the legendary Uchiha clan leader, Madara. He had been manipulating events from behind the scenes and using a false identity to achieve his goals. This revelation was a major plot twist in the Naruto series and had a significant impact on the storyline. **

In a hypothetical battle between Itachi and Shisui against Madara, it would be a challenging fight for both sides. Madara is an extremely powerful and skilled shinobi with the Rinnegan and Mangekyo Sharingan, making him a formidable opponent. However, Itachi and Shisui are also highly skilled Uchiha clan members with unique abilities such as Amaterasu and Kotoamatsukami. Ultimately, it would depend on the strategy and teamwork of Itachi and Shisui to overcome Madara's overwhelming power and experience. **

Madara has two Rinnegan, one in each eye. **

It is difficult to definitively say whether Kaguya is weaker than Madara as their power levels are not directly comparable. Kaguya possesses immense power as the progenitor of chakra and the main antagonist of the Naruto series. Madara, on the other hand, is a highly skilled and powerful Uchiha who has achieved the Rinnegan and has been a formidable opponent for the protagonists. Ultimately, their strength and abilities are different, making it challenging to determine who is weaker or stronger. **

It is widely believed that Madara is stronger than Sasuke. Madara possesses immense power and abilities, such as the Rinnegan and the ability to use the Six Paths techniques. Additionally, Madara was able to overpower Sasuke in their encounters during the Fourth Great Ninja War. Overall, Madara's strength and experience make him a formidable opponent compared to Sasuke. **