A very good, skillful player who can dominate in most games simply by observing it a couple of days, then applying his acquired wisdom into the game.
The word "imbaleetpro" was developed in the game "Bushtarion", where AntiNoobKiller (ANK) showed up and proved a never seen before level of skill. This level was so high that we, gamers, needed a new word, thus the birth of "Imbaleetpro".
Also so the other imbaleetpros like myself will understand that its timebased game. Anyone can be a imbaleetpro legend.