Atavar was a very good strip, which shares a lot of similarities with Kingdom I think. Obviously, it's the same writer and artist do there's a visual coherence, but there's more than that. The structure is similar in the way that each instalment ends in a way that could be final but still allows for more stories. Are you listening Pat?
Then there's the importance of language and communication in defining the characters in both. You mentioned the wordless first episode and I think that and our man's subsequent difficulty in communicating with the alien characters defines him as much as the deliberately limited, repetitive vocabulary does for Gene and the others in Kingdom. As the series unfolds, we meet progressively more alien viewpoints: I can't remember if the Binod are in the first or the second, but you also have Voidshaker and Worldbreaker, the Wosk's bizarre conceptualisation of the Universe and UOS itself which all stretch Atavar's powers of empathy.
Great stuff I think, with an audacious shaggy dog ending which works because you don't expect something like that from a "proper" story.