Gardner

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

According to some, Gardner was a scientist who put forth the hypothesis that the Earth might be a hollow globe, with an underground environment contained within.

Fiction

Cybertron cartoon

Professor Lucy Suzuki spoke of the Hollow Earth theory to Bud, Coby, and Lori. Among the people she name-dropped during her explanation of the concept was Gardner. Ice

Notes

• In real life, Martin Gardner was the author of the 1913 book "A Journey to the Earth's Interior".