THEN: Mario Lopez as 'A.C. Slater'
Dimpled actor Mario Lopez played Bayside jock Albert Clifford "A.C." Slater. Star quarterback of the Bayside Tigers, Slater was Zack's best friend, although the two constantly fought for Kelly's affection. Eventually, Slater found his true love — Jessie "Mama" Spano.—David Onda (Photo: NBC)
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