Green Warlock Theory

I noticed something while watching Bee and Puppycat. In the episode of "E15 Now I'm really alone ", we see Moully steal the green warlock's ring.

https://preview.redd.it/l6sknui472t91.png?width=1593&format=png&auto=webp&s=0835f20ab9cabe5c8fb524552d44f1c25a0eafb6

In a previous episode "E8 Funny Lying", Violet pours out the box full of confiscated toys on the ground. To the left of Puppycat's ring is another ring visible, which looks exactly like the one that the green warlock owns.

https://preview.redd.it/mqhexfi572t91.png?width=1595&format=png&auto=webp&s=fb11deae59a7b673c42b8e84e1c62e6235c0ce5b

So this made me wonder if the warlocks that are looking for Puppycat, were classmates of his or atleast got taught by the same teacher as he and violet did. What do you guys think ?