Harry Potter

Harry Potter is a lego character in the Lego Batman Youtube Series who first appeared in the episode Alfred's Party. He has made plenty of cameos since until his biggest debut in the Ultimate Lego Race. He has never had any speaking lines, even in the Ultimate Lego Race. It is shown in the Ultimate Lego Race that Potter is horrible at magic, as shown when nothing happened when Potter waved his wand at Vader.

Cameo
Harry Potter is seen in many random cameo from as early as the episode Alfred's Party. He has never had any minor speaking lines at all, mostly because he's horrible (according to the producers). Harry Potter is one of the many major cameo characters, and he is even shown in the Lego Indian Jones series, also done by ForrestFire101.

The Ultimate Lego Race
Harry Potter's biggest appearance was in the one-shot episode the Ultimate Lego Race, in which he participated in. He was killed by Darth Vader after he used the Force on him.

Trivia

 * When the annoucers of the race said Harry Potter was using his wand the wrong way, they said, "He's supposed to twist it and flick, not flick it and twist!"