Oscar Isaac Gomez Addams (voice) Charlize Theron Morticia Addams (voice) Chloë Grace Moretz Wednesday Addams (voice) Finn Wolfhard Pugsley Addams (voice) Nick Kroll Uncle Fester (voice) Snoop Dogg It (voice) Bette Midler Grandmama (voice) Allison Janney Margaux Needler (voice) Martin Short Grandpa Frump (voice) Catherine O'Hara Grandma Frump (voice) Tituss Burgess Glenn (voice) Jenifer Lewis Great Auntie Sloom (Voice) Elsie Fisher Parker Needler (voice) Conrad Vernon Lurch / Priest / Spirit of the House / Dr. Flambe (voice) Aimee Garcia Denise (voice) Scott Underwood Mitch (voice) Mikey Madison Candi the Barista (voice) Chelsea Frei Bethany (voice) Pom Klementieff Layla & Kayla (voice) Deven Green Ms. Gravely (voice) Maggie Wheeler Trudy Pickering (voice) Harland Williams Norman Pickering / Ggerri (voice)