No One replaced the character of Giles. Although Anthony Stewart Head had a few sabbaticals from the show, he remained with the show through the last episode of season 7. the "Council" sent Wesley Wyndham Price to replace Giles, (season 3), however Buffy clearly never regards Wesley as her watcher.
Wesley Windham Price replaces Giles as her watcher. Buffy quits the council in the end of season 3, leaving her "watcher-less." In season 5, she demands that Giles be reinstated as her watcher.
Yes he played Giles. Buffys Watcher
Ummm.... No, not at all... He's one of the main protagonists throughout the entire show.
Yes, in the season 3 episode 'Helpless' on Buffy's 18th birthday, Buffy is forced by the watchers council to complete a challenge that involves her facing a vampire with the mere strength of a regular girl. Her powers are supressed by injections administered by Giles without her knowledge.
He never mentions it, nor is anyone shown telling him, so most likely he does not.
Rupert.
Wesley Windham Price replaces Giles as her watcher. Buffy quits the council in the end of season 3, leaving her "watcher-less." In season 5, she demands that Giles be reinstated as her watcher.
Rupert
Rupert
Rupert
Rupert
Rupert!
Buffy Summers
Rupert
Rupert
Yes he played Giles. Buffys Watcher
Giles' nickname during his misspent youth was "Ripper." Ethan Rayne still calls him that.