Rock Lee only uses tae (Thai?) jutsu but is one of the few characters I’d expect an entertaining fight from if he went toe to toe with anyone in the series. He wouldn’t necessarily win, but his secret power was that everyone underestimated him, even those who knew he was strong didn’t appreciate just how strong he was until he surprised them.
It was always hilarious to watch the dynamic between Guy and Lee with Tenten and Negi helplessly watching on as the two worked each other up.