Furry Eggman

Mr. Purple Doctor Thingie is a transformation that appears in the Sonic Boom television series. It is the mutated form of Dr. Eggman which the doctor could achieve through anger after being bombarded with purple rays. This form is the result of a failed experiment Eggman conducted himself in an attempt to gain powers of his own.

Appearance
When turning into Mr. Purple Doctor Thingie, Eggman gains purple fur and shrinks down to the size of a regular cat. He also gains a purple feline body and tail, small wings, a spherical head with completely dark blue eyes, and knobs on his forehead with green lenses in them. Eggman does retain his mustache and red jacket though, although both of them have shrunk along with him.

Accordingly, Mr. Purple Doctor Thingie has described as adorable-looking.

Season two
Following the origin story of the Clunk, Dr. Eggman radiated himself with purple rays in hopes of obtaining superpowers. Instead, it gave Eggman a condition that made him temporarily transform into Mr. Purple Doctor Thingie whenever he got angry. While in this form, Eggman's consciousness would simply black out, his mind regressing to that of energetic animal's.

When Eggman morphed for the first time, he fled from his lair and ran all over Hedgehog Village for the villagers to see until Orbot and Cubot brought him home. After reverting back to normal, Eggman figured out his form would wear of permanently if he did not morph for two days. Unfortunately, Eggman's bad temper made him re-morph in public, earning him a great deal of humiliation from the public. To control his morphing, Eggman went to anger management and got his temper under control. Eggman soon needed to morph again though so he could get Beth the Shrew out of his lair's trash compactor through its narrow garbage chute. After Eggman managed to morph, Sonic brought Eggman to Beth. Exhibiting control over his transformation, Eggman saved Beth. After that, he resumed his attempts to get rid of his form.

Powers and abilities
In this form, Eggman possesses cat-like agility. He is also able to fly thanks to his wings, and is able to remit rainbows when running.