Reflection API to choose between instantiation of a base class or its extended version from a different project

Let's say I have a class named Human in ProjectA. It is instantiated in the CreatureBuilder class of the same project.

Now I want to create a new class called Cyborg in a different project, i.e. in ProjectB. ProjectB has ProjectA in its imports, but ProjectA knows nothing about ProjectB.

Cyborg extends Human, and must also be instantiated by CreatureBuilder of ProjectA (so, Cyborg is located in ProjectB, I call CreatureBuilder from ProjectB to instantiate Cyborg, but CreatureBuilder is located in ProjectA, as well as my Human class).

I need a logic to create a Human when CreatureBuilder is instantiated from ProjectA, and to create a Cyborg when CreatureBuilder is instantiated from ProjectB.

I know that it can be done by creating an interface with a getCreature() method (that will be overridden in ProjectB) and a factory class. But can I use Reflection API instead? From its description, looks like it was designed to do something related (please correct me if I'm wrong). I know that reflections are slow though, and I normally avoid them. But it would be great to see a proof-of-concept, just out of curiosity.