Most of them fight for you. The green one turned around and went for Bautista instead.
Among the figures Daniel Bautista has burned through, the Slizzers stood out for a bad reason. The ordinary ones behaved. One green variant Slizzer attacked him. He still has a second green variant and does not dare use it.
It is the specific case behind the general problem he brought to Carl: some of the summons do what he says and sometimes they do not, and he has no idea why. Nothing in the figure's description warns him which is which, and he has been fighting a floor's worth of monsters on that coin-flip.
A monster type that comes in colour variants, at least one of which does not recognise who summoned it.
The proof that Jaxbrin summons are not reliably loyal, and the reason one of Bautista's remaining figures stays in his inventory.