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&nbsp Grey Matter is a Galvan from the planet Galvan Prime. He is Ben's 5th transformation who appeared first in Washington B.C.

Appearance[edit | edit source]

Grey Matter is a very small alien. Its unknown how small he is but he is the smallest alien in his galaxy. He is all greenish and looks like a martian. He is wearing the same shirt that normal Ben is wearing and the Omnitrix symbol is on his back.

Abillities[edit | edit source]

Being very small grey matter is able to go through the smallest of spaces giving him an advantage. He is also the smartest being in 5 galaxies so he can create almost anything or destroy anything.

Ben 10[edit | edit source]

Grey Matters debut

He first appeared in the episode Washington B.C. where he is looking for the gold Sumo Slammers card in the M-Mart. After he makes a mess he leaves his cousin Gwen getting in trouble.

Appearances[edit | edit source]

Ben 10[edit | edit source]

Transformation[edit | edit source]

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Gallery[edit | edit source]

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