In several video games, Rock Lee can unlock the seventh gate, despite the fact that in the actual storyline, he was only shown capable of unlocking the first six gates. In Rock Lee's Springtime of Youth Full Power Ninja Chronicles, he is also shown to be able to unlock an incomplete seventh gate.
Rock Lee is able to open all gates except 7th and 8th.
When properly motivated, he can subconsciously open the first of the Eight Gates. Metal is also quite adept at shurikenjutsu, able to effectively aim for targets from behind blind-spots.
Well, first of all, it's a forbidden jutsu, due to the harm it causes to the user. It isn't very reliable, especially because the power the user receives is of a limited time. It's important to note that the body has these gates to protect the body from an overflow of chakra.
Originally Answered: Is fused Zamasu stronger than Beerus? Yes. Vegito SSB was able to overpower Merged Zamasu. Beerus Full Power would be somewhere near Goku CUI.
Fusion Dance: Which is Stronger? Considering that each Fusion technique has nearly identical power boosts, it doesn't seem like one of them could be stronger. However, the superior technique in Dragon Ball is clear. Potara Earrings, despite lasting longer, have a history of instability when used by powerful beings.