Yes. When Mizar and Kaito confront in the Moon, Mizar cleary says "then the Numeron Code belongs to the Barian World" (Kaito explained to him that their respective Galaxy-Eyes are the keys to the Numeron Code).
Photon monsters were created with Barian's energy.
They can interact with "Numbers" monsters (bypassing the "cannot be destroyed by battle execpt with "Number" Xyz Monsters" rules via several removing effects) and Kaito can do Photon Change and Photon Hand (the latter ability let Kaito take his opponents' "Numbers").
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