As multiverse research advances, ethical considerations surrounding the rights of sentient beings in parallel universes come to the forefront. The recognition of sentience varies widely across dimensions, from human-like beings to entirely different forms of existence. Ethical theories that advocate for the intrinsic rights of sentient beings suggest that researchers have an obligation to respect the autonomy and welfare of creatures inhabiting alternate realities.

Negotiating ethical relations within the multiverses necessitates ongoing dialogue regarding the criteria that define rights and sentience. This entanglement leads to discussions on whether beings from alternate dimensions deserve the same ethical considerations we afford ourselves in our own universe. Establishing criteria for ethical treatment based on principles of empathy, cooperation, and non-discrimination becomes necessary in the context of multiverse interactions.