Amazon.com: Figures Based on Ben 10 Action Figures - Set of 9 Toys [Ben Tennyson, Four Arms, Grey Matter, Kineceleran, Diamondhead, Hex, Steam Smythe, Cannonbolt, Heatblast] : Toys & Games
Grey Matter's Figure in Omniverse by ZeLuizOB on DeviantArt
Ben 10 Action Figure Set, Ben 10 Toys Model Set-Ben, Grey Matter, Rath – ToysCentral - Europe
Bandai America Ben 10 Alien Collection Series 1 GreyMatter Action Figure - US
Bandai America Ben 10 Ultimate Alien Terraspin, Ultimate Big Chill, Eye Guy, Diamondhead, Grey Matter & Cannonbolt Toys 'R Us Exclusive Mini Figure 6-Pack - US
Bandai America Ben 10 Alien Creation Chamber Diamondhead & Grey Matter Mini Figure 2-Pack - US
Ben 10 Grey Matter Binoculars Bandai Metamorfigure 2006 Action Figure 20 cm Tall | eBay
Ben 10 Ben Tennyson Grey Matter Heatblast Humongousaur Rath Vilgax Min - Supply Epic
Year 2017 Ben 10 Series 4 Inch Tall Figure - BEN TENNYSON with GREY MA – JNL Trading
Amazon.com: Ben 10 Ben & Grey Matter Action Figure, 48 months to 1200 months : Toys & Games
Ben 10 Action Figure Set, Ben 10 Toys Model Set-Ben, Grey Matter, Rath – ToysCentral - Europe