Rimuru Tempest (human) from That Time I Got Reincarnated as a Slime series. Use dk_rimuru in your prompt to activate the embedding.
This embedding is really versatile and can be used for generating both female and male without so much issue. The only problem is, most of the models available are not suited for generating otoko_no_ko characters. So using negative prompts such as "1girl, large breasts, cameltoe, pussy" when generating male version of Rimuru is highly advised.
Those listed models below have been tested and got great results with them so far:
Anything v4.5 (best for SFW)