Since the characters are just starting, you can have one of those summons, but they still have to be like the character temp. Bio, Moves, Discription... etc.
By having a summon, it does count as part of your character moves.
Also by having a summon for now it will count as your 2nd character, (I know you need Npcs for rp, so they will be aloud as long as you ask me threw a vm or somthing more questions just ask)