It's confirmed. Ben simply preferred Fasttrack over XLR8 when he had the Ultimatrix. No other reason for not using him. : r/Ben10
XLR8 by Slapshot6610 | Ben 10 comics, Ben 10, Ben 10 ultimate alien
Four Arms XLR8 Stinkfly Ben 10 Cannonbolt, ben 10 aliens, dragon, logo, vertebrate png | PNGWing
Ultimate Alien #4 XLR8 by MrMustart on DeviantArt
Ultimate XLR8 | Ben 10 Fan Fiction Wiki | Fandom
Ben 10: Omniverse XLR8 DeviantArt, PNG, 632x1004px, Ben 10 Omniverse, Aliens, Art, Ben 10, Ben 10
Buy Ben 10: XLR8 at Mighty Ape NZ
XLR8 | Ben 10 Wiki | Fandom
Ultimate XLR8 by ODoutor on @DeviantArt | Ben 10, Ben 10 comics, 10 things
XLR8 | Ben 10 Fan Fiction Wiki | Fandom
Ben 10: Omniverse XLR8 Cartoon Network, BEN 10, fictional Character, cartoon png | PNGEgg
Ben 10 Ultimate Alien XLR8 Haywire by Ben 10 : Amazon.in: Toys & Games
Rob on Twitter: "Ultimate XLR8. He can wall-crawl, phase, and store the heat that builds up when he runs and either fire a beam out of his mouth, or propel it from
Ben 10 Alien Collection Series 1 XLR8 4 Action Figure Bandai America - ToyWiz
Bandai America Ben 10 Ultimate Alien XLR8 Haywire Action Figure - US
Caio Megaverse on Twitter: "Ultimate XLR8 to celebrate my 400+ watchers on DeviantArt #ben10 #ben10ultimatealien #deviantart #CartoonNetwork #oldcartoonnetwork #xlr8 #ben10xlr8 https://t.co/ddj7taVQUi" / Twitter