Yeah it’s Gavin Hammon playing Stan in Return, and he was Stan in Tales as well. (He’s also Kenny in The Walking Dead.)
Kurt Russell in Used Cars, like Stan himself, are both takes on Cal Worthington. Somewhere between Cal and The Music Man (archetype reused as the Monorail salesman in the Simpsons) — that fast talking nasal voice with a tiny drawl — is how I always pictured Stan in the original games, and the slow, smooth talking version in Curse never felt right to me.