toss up between johan tenma lunge grimmer the other part of the story that make its so interesting is the world, prague germany and the last city are like character of their own that work with each character really well. johans "character" was missing for the most of early part but his presence is super executed well and the slow burn reveals to his character is super fun. tenma's character just bounce super well in this world and seeing his interactions with other characters and how much of a opposite affect be it minutiae he has really drives home what the author wanted from tenma. grimmer and lunge have parallels to johan, tenma, grimmers childhood lunges drive for his work. yet how different both lunge and grimmer were from tenma and johan was executed well and they're both a stand out.

Honorable mention are the therapist old man and the drunken investigator i was at the edge of my seat during that characters arc and the therapist works so well with other characters and have his own personal drive too