The Ted movies had Patrick Stewart among their star-studded cast, and while he was missed from the prequel Ted TV show, the actor who stepped in to replace him was perfectly suited to do so. Stewart's Ted movie role wasn't the most prominent, but his contributions were just as important as other members of the production. The Star Trek star's replacement needed to be carefully chosen, and luckily, the producers hit the mark with their decision.
https://screenrant.com/ted-show-narrator-ian-mckellen-replacing-patrick-stewart/