Here's what we know:
* He left the show in the early seasons, but the exact season is debated by fans. Some say he was absent for parts of Season 2, while others claim he was gone by Season 3.
* His departure wasn't due to any dramatic conflict, but rather a decision to focus on other projects.
* He returned for a few episodes later in the series, likely as a guest star or to wrap up his character's storyline.
It's important to note that there's no definitive, single answer to this question. Fans and media outlets have differing opinions on the specifics of his departure and return.