Both are unique non-cliche works, hard to find resembling anime for both. Both have some unexpected dark and adult material down the road (each in its own way). Both using 3D CGI and at the same time both are a rare cases of art didn't get totally ruined by it like in many other anime last years. Both protagonists have animal traits (though in Dorohedoro protagonist have only lizard head, when in Beastars all characters are anthropomorphic animals) and both of them have funny moments coming from their animal species.
Dorohedoro and Tokyo Ghoul involves a main protagonist whose life undergoes a drastic change. Their character becomes less of a human but more of a supernatural being with special abilities. Both series revolves around creatures who can do extraordinary things. At the same time, there's a dark mystery that revolves around the origins of these powers. Both series' story are thought provoking with a variety of themes. Recommended for fans of supernatural/fantasy/horror.
It’s honestly crazy how these shows are so similar and aired one season after the other but anyways:
The protagonists of both shows have their heads turned into something strange and as a result they have amnesia. Kaiman from Dorohedoro has his head turned into a lizard head, and Juzo from No Guns Life has his head turned into a gun.
Both main characters have female partners that are blonde. Kaiman has Nikaidou and Juzo has Mary.
Both settings are also very similar in that they have these cyber punk, dirty, grungy, steamy land scapes.