Who among the following was NOT a character involved in the Spartan conflict?

The character associated with the Spartan conflict that stands out is Kratos, who is prominently featured in the “God of War” video game series. While he embodies many elements of Greek mythology and interacts with various mythological figures, he is not historically or mythologically tied to the actual Spartan conflicts or the specific historical context of ancient Sparta.

In contrast, the other options have connections to either mythological narratives or historical accounts that relate to Spartan themes or conflicts. Udaeus and Echion, for example, are figures from Greek mythology who have varied associations with the Trojan War and other narratives involving Greek heroes, which touch upon themes of Spartan values. Pelorus might not be as well-known but has some mythological references that link back to concepts of war and conflict in ancient Greece.

Thus, identifying Kratos as the character not involved in the Spartan conflict relies on the understanding that he is mainly a product of a modern interpretation of myth rather than a historical figure connected to the actual events from ancient Sparta.