Who do you think these four people are?

i think that the one that has the Aso at her side is lupa the one under her is frank and the one beside him is bobby and the girl on the tuktok is hazel or one of the other girls but it is kinda hard to pick because you imagin them one way and mabye they aren't that way but like i sinabi it it kina hard to choose

Personally, I think that the woman with the silver canine creatures if either Lupa or Diana (Artemis). The girl on the right might be Reyna--she looks like she's a centurion, or at least a high-ranking officer.
The boy with the bear/wolf shadow, I think it is Frank. Since the the seven demigods of the prophecy's parent's are Zeus (Jason), Poseidon (Percy), Hades (unknown), Hephaestus (Leo), Aphrodite (Piper), Ares (unknown), and Athena (unknown), there is only three gods left--Athena, Ares, and Hades. The guy on the left has a wolf/bear shadow, which can signify that he is a child of Mars/Ares, and therefore, possibly Frank.
The guy on the right, since he's holding a teddy bear, might be young, which could mean that he's a younger Jason. However, the madami likely choice is somebody we haven't heard of yet, but I have no idea what is up with the teddy bear.