Assuming you don’t know already know the character’s history by heart, we’ll quickly recap: Domingo was introduced in a 2024 sketch in which a group of bridesmaids (including Ariana Grande) at a wedding reception sang an off-key parody of Carpenter’s “Espresso” about a tryst with Kelsey, the bride. The segment became an unexpected viral hit, leading to further installments where Domingo crashed the newlywed couple’s babymoon and — on the “S.N.L.” 50th-anniversary special — a vow-renewal ceremony for Kelsey’s parents, played by Molly Shannon and Martin Short.