Rock Lee

Rock Lee (ロック・リー, Rokku Rī) was going to appear in Super Smash Flash 2 as a playable character, but was cut from the game due to fans' complaints. Because of that, none of his attack, nor special moves were even known.

Character description
In an interview in Shōnen Jump's Naruto Anime Profiles Episodes 1-37, Masashi Kishimoto claimed that he enjoys drawing Lee more than any other character in the series. When designing Lee's appearance, Kishimoto intended to have Lee wield a variety of weapons, including nunchaku; however, due to time constraints while creating the series, he was unable to do so. Kishimoto has noted that he originally designed Lee to symbolize human weakness; Kishimoto's design of Sakura Haruno was also intended to carry the same symbolism. Due to the popularity Lee garnered over the course of the series, Kishimoto tends to place him towards the front of promotional artwork in which he appears.

In Super Smash Flash 2
Rock Lee was originally planned to be a playable character in Super Smash Flash 2, but was cut very early into development. However, Rock Lee wasn't taken out completely from the game as he makes a minor cameo on the stage Hidden Leaf Village, staying in the foreground doing push-ups. He is one of the numerous background characters in that stage, alongside Chōji Akimichi, Gaara, Shikamaru Nara, Hinata Hyūga and Itachi Uchiha.

Assist Trophy rumor
On Saturday, September 25, 2010, SSF2 Developer Ramsey leaked a screenshot featuring Lee appearing in Konoha, leading non-devs to believe that Lee would appear as an Assist Trophy. This rumor has since been proven false thanks to Konoha's update on the DOJO!!.