There are plenty of powerhouses in Sailor Moon, Usagi Tsukino being the most powerful of them all with her good heart and Silver Crystal, but her boyfriend is infamously, laughably, weak in comparison.
As the only reoccurring male character, Mamoru Chiba stands out as the focal love interest for Usagi and as the mysterious Tuxedo Mask. To get into the details of his powers and abilities — and why he can't properly use them — we need to look into his past life as Prince Endymion.
Endymion was prince of Earth during the Silver Millennium and ruled over the Golden Kingdom. He helped protect Elysium with Helios and was guarded by the Shitennou, Nephrite, Jadeite, Kunzite, and Zoisite. He was in possession of an extremely powerful sailor crystal called the Golden Crystal, which is equal in power to Sailor Moon's Silver Crystal.
This Golden Crystal was a product of the powerful dreams of the people of Earth, and its strength relies on people fulfilling those dreams. It is strongest when multiple people come together to strive towards a shared dream, like all the characters longing to save Earth from the Dead Moon Circus in Sailor Moon Eternal.
Prince Endymion fought with his crystal and a sword, and flash forward a couple of hundred years and a reincarnation, Tuxedo Mask approaches combat the same way. The roses he uses in combat are pulled directly from Elysium, the Earth's heart, and are imbued with the Golden Crystal's power. While transformed, Tuxedo Mask of course has the same physical enhancements the girls' experience, and also has an energy attack called Tuxedo la Smoking Bomber.
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His power set is built like the other scouts, and if Endymion's crystal is just as strong as Princess
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