Suggestions by @devlinclements

Noah the Elder

as Richard Griffiths in Roles That Actors / Actresses Were ALMOST Casted

Memphis (Happy Feet)

as Paul Rudd in Roles That Actors / Actresses Were ALMOST Casted

Lovelace(Happy Feet )

as Kelsey Grammer in Roles That Actors / Actresses Were ALMOST Casted

Gloria (Happy Feet)

as Mila Kunis in Roles That Actors / Actresses Were ALMOST Casted

Beta (UP)

as Arsenio Hall in Roles That Actors / Actresses Were ALMOST Casted

Alpha (Up)

as Bronson Pinchot in Roles That Actors / Actresses Were ALMOST Casted

Dug (Up)

as Kevin James in Roles That Actors / Actresses Were ALMOST Casted

King Arthur (Quest for Camelot)

as Michael Caine in Roles That Actors / Actresses Were ALMOST Casted

Bladebeak

as Dana Carvey in Roles That Actors / Actresses Were ALMOST Casted

Griffin (Quest for Camelot)

as Bob Hoskins in Roles That Actors / Actresses Were ALMOST Casted

Sir Ruber

as Rupert Everett in Roles That Actors / Actresses Were ALMOST Casted

Kayley (Quest for Camelot)

as Cate Blanchett in Roles That Actors / Actresses Were ALMOST Casted

Uncle Dan (Migration)

as John Goodman in Roles That Actors / Actresses Were ALMOST Casted

Pam Mallard (Migration)

as Scarlett Johansson in Roles That Actors / Actresses Were ALMOST Casted

Mack Mallard (Migration)

as Elijah Wood in Roles That Actors / Actresses Were ALMOST Casted

Sarabi

as Jane Fonda in Roles That Actors / Actresses Were ALMOST Casted

Zazu

as Rik Mayall in Roles That Actors / Actresses Were ALMOST Casted

Timon

as Billy Crystal in Roles That Actors / Actresses Were ALMOST Casted

Nala

as Teri Hatcher in Roles That Actors / Actresses Were ALMOST Casted

Scar (The Lion King)

as Derek Jacobi in Roles That Actors / Actresses Were ALMOST Casted