a hyper realistic character concept art grim reaper, 4K symmetrical portrait, character concept art, Rendered in Octane, trending in artstation, cgsociety, 4k post-processing highly detailed,by wlop, Junji Murakami, Mucha Klimt, Sharandula, Hiroshi Yoshida, Tom Bagshaw, Ross Tran, Artgerm, Craig Mullins,dramatic, Junji Murakami, moody lighting rendered by octane engine,characters 8K symmetrical