Tracey Sketchit is a Pokemon watcher and the assistant of Professor Oak. Tracey loves to sketch drawings of Pokemon and he also has a broad knowledge about Pokemon. Tracey admires Professor Oak and it was a dream come true to be accepted as an assistant.
During the adventures in the Orange Islands Tracey was Ash Ketchum's traveling companion along with Misty. It was during this season that he replace Brock.
When the producers of the Pokemon anime realized that Pokemon would air in international countries, they were worried that some viewers may perceive Brock as a racist character; since he rarely ever opens his eyes. So they wrote Brock out of the story with the intention he would stay with Professor Ivy permanently and at long last be happy with a woman who loved him.
However when fans expressed how much they missed Brock and no one complained about any racism, the producers brought Brock back for the adventures in Johto and had Tracey stay with Professor Oak.
In the English dub version of the Pokemon anime by 4Kids Entertainment, Tracey was originally voiced by Ted Lewis. After 4Kids lost the license for the anime, Craig Blair instead voiced the role for his appearance in the episode "Home is Where the Start Is".