Alaskey passed away on February 3, 2016 from cancer at age 63.
- Grandpa Lou Pickles in Rugrats and its spinoff All Grown Up!note
- Replaced Sid Raymond as the voice of Baby Huey in the second season of The Baby Huey Show.
- Flaps the Elephant in Bonkers
- Was one of the official voices of many Looney Tunes characters, particularly Daffy Duck and Sylvester from 1991 to 2007.
- Additional voices in Extreme Ghostbusters
- Stinkie in Casper and The Spooktacular New Adventures of Casper
- Droopy in the Tom and Jerry direct-to-video movies from 2011 to 2016.
- Doctor Octopus in Spider-Man: Friend or Foe
- Richard Nixon in Forrest Gump
- Lobster Mobster in The Little Mermaid
- Dr. Ziplock in Spaced Invaders
- Mermaid Man in SpongeBob SquarePants: Lights, Camera, Pants! and Sponge Bob Square Pants Creature From The Krusty Krab (replacing Ernest Borgnine)
- Uncle Beano on Out Of This World (1987), likely his most famous live-action TV role.
- Sourpuss and additional voices in Mighty Mouse: The New Adventures
- Hustler on Avatar: The Last Airbender
- Marty on Buzz Lightyear of Star Command