The concept of people from different universes having a baby is primarily a speculative and imaginative idea, as it pertains to the realm of fiction and hypothetical scenarios. In the absence of concrete scientific knowledge about multiple universes or the ability to travel between them, we can only speculate on the potential outcomes.
In most fictional works, the idea of individuals from different universes having a child often involves combining or inheriting traits from both parents' universes. The specific characteristics of such a child would largely depend on the rules and mechanics of the fictional universes involved. These rules could include variations in physical laws, genetic makeup, cultural influences, and so on.
Some fictional universes may explore the idea of hybrid offspring, where the child possesses a combination of traits or abilities from both universes. This could result in unique and extraordinary characteristics that set them apart from individuals in either of the parent universes.
However, it's important to note that the concept of different universes and interdimensional travel remains speculative in the real world. there is no scientific consensus or evidence supporting the existence of multiple universes or the ability for individuals to traverse between them. Therefore, any discussion of the consequences of inter-universal reproduction remains purely speculative and within the realm of imagination.