In view of the mercurial nature of one half of the dual-fold topic of this analysis, perhaps it would hold both me, as the author, and you, as the reader, jointly in good stead to open with an attempt at a definition. What is sincerity? Sincerity is a noun. Among other things, it refers to the absence of pretense, deceit, and/or hypocrisy. Its synonyms include the following: honesty, genuineness, truthfulness, good faith, lack of deceit, integrity, probity, trustworthiness, wholeheartedness, seriousness, earnestness, straightforwardness, openness, candor, candidness, guilelessness, ingenuousness, and bona fides. Developed in the 1530s from Middle French, itself from the Latin sincerus, the adjectival form of “sincere” refers to such concepts as the unmixedness, wholeness, cleanliness, purity, and umixedness of things. From this definition, it is clear, and perhaps even curious or strange to some, that sincerity is latently albeit ultimately concerned with mixture(Online Etymology Dictionary 2020).My sensitivity to the etymology of the term inheres in my using it for the title of this analysis. Contained in my usage thereof is a play on the seemingly paradoxical, inter-indexical idea and tension between purity and mixture, hybridity and singularity at the heart of sincerity. My approach to Tartakovsky the man, his career, and artistic praxes, and the works that result therefrom is centered on the idea that all three are the product of mixture. I am looking at the man as a Russian-American immigrant. I am looking at the artist as one whose artistry manifests in a career composed of equally diverse and numerous interconnected component parts, roles, and purviews: director, producer, cinematographer, storyboardist, concept artist, and more. I am looking at his oeuvre as the product of multi-(sub)genre and epochal references, homages, stylizations, and reduxes. In this sense, Tartakovsky’s individual and artistic identities are fundamentally marked by impurity, that is, by mixture, fragmentation, variance, multiplicity, and hybridity. Ironically, the paradox of sincerity in reference to Genndy’s work is that, as I hope to show, the sense of his artistic agility, the range of his inspiration, and the myriad influences at the core of his corpus produce a singularly unique body of work that registers in all its aspects—from its humor, drama, action, themes, motifs, to its commentaries—as pure, true, candid, and truthful. In short, as sincere.