The cast and crew of Angel has a mini-reunion at the wedding of J. August Richards, who played Charles Gunn. The spinoff of Buffy the Vampire Slayer, led by David Boreanaz's titular, brooding character, never had a core Scooby Gang in the way that its predecessor did. Angel instead added to its main ensemble throughout its run, but there were a few mainstays. Richards made his first appearance as Gunn made his first appearance towards the end of season 1, remaining with the show until its conclusion.
https://screenrant.com/angel-show-cast-reunion-images-wedding/