Does it make sense that Knuckle has a mascot as an emitter?
Emitters can create beings made out of nen; it has been shown with Emitters in the dodgeball game. Razor creates his 14 devils and Goreinu creates his gorillas. These creatures are not conjured but are simply physically shaped nen made to do a task. The nen beasts are invisible to people without nen training and are controlled with manipulation which is similar to emission for this purpose.

The creatures can also have abilities giving to them, like Razor's devils being able to merge with each other and Goreinu's gorillas being able to teleport. This is how Knuckle creates the APR with the powers. It's mainly emission with a small bit of manipulation to give the APR its orders when it's created. These abilities look like conjuration but are actually complicated emission techniques.