Hendo in Aberdeen
Two which spring to mind.
My first consistent watch of a tournament was the 2008 PL, it had some seriously iconic walk-ons, which put today's to shame. Maybe the best combined list of walk ons ever.
You had the tried and tested Taylor, Barney (When he was doing the "mean stare" with the angry eyes) and Lewis (doing his aggressive crowd high 5s and sprinting up steps lol

The only boring crap walk on was, of course, Wade, who at that time walked on to Two Tribes by Frankie Goes to Hollywood. It's a decent song but the fact he barely got into it stuck out like a sore thumb amongst the other colourful ones, from the viewpoint of 10 year old me. So much more effort put into it back then compared to now.