Suggestions by @batmack2

Red (Cars)

as Inferno in Disney Characters as Transformers

Mulan (Disney)

as WindBlade in Disney Characters as Transformers

Hades (Hercules)

as Megatronus/The Fallen in Disney Characters as Transformers

Jim Hawkins

as Hot Rod in Disney Characters as Transformers

Maleficent (Sleeping Beauty)

as Airachnid in Disney Characters as Transformers

Ursula (The Little Mermaid)

as Airachnid in Disney Characters as Transformers

Cinderella (Disney character)

as Chromia in Disney Characters as Transformers

Chernabog

as Unicron in Disney Characters as Transformers

Ariel (The Little Mermaid 1989)

as Arcee in Disney Characters as Transformers

Hercules (Hercules)

as Optimus Prime in Disney Characters as Transformers

Mufasa

as Optimus Prime in Disney Characters as Transformers

Simba

as Hot Rod in Disney Characters as Transformers

Scat Cat

as Jazz in Disney Characters as Transformers

Clint Eastwood (song)

as Gordon in Thomas and Friends Theme Songs

Eye of the Tiger

as Percy in Thomas and Friends Theme Songs

Bohemian Rhapsody

as Henry in Thomas and Friends Theme Songs

Roundabout

as James in Thomas and Friends Theme Songs

Locomotion (song)

as Thomas in Thomas and Friends Theme Songs

Slug (Transformers)

as Copernicus the dog in Back to the Future but it's Transformers

Grimlock (G1)

as Einstein the dog in Back to the Future but it's Transformers