音像藝術家及專案經理。經歷包含街舞、表演藝術與媒體藝術，以創作、製作與系統設計等多重角色穿梭其中。其創作以聲音與演算視覺的即時生成，將程式碼與自製介面視為表演材料，常以結構即興方式演出，在控制與隨機之間構築動態音像；作品風格帶有社群觀察與童趣語彙，演出見於數位藝術節與實驗聲響等場景。現任音像推廣團體「噪流」執行總監，及臺北藝術大學新媒體藝術學系兼任講師。

WHEREISCHAPPIE (LIU Tung-Yu) is an audiovisual artist and project manager whose practice spans street dance, performing arts, and media arts. Working across creation, production, and system design, he moves between these fields through multiple intersecting roles. His work focuses on the real-time generation of sound and algorithmic visuals, treating code and self-built interfaces as performative materials. Through structured improvisation, he constructs dynamic audiovisual systems operating between control and randomness. His works reflect observations of subcultural environments alongside a sense of childlike playfulness. His performances have been presented at digital art festivals and experimental sound scenes. He currently serves as Executive Director of the audiovisual group Fluid Noise and as Adjunct Lecturer in the Department of New Media Art at Taipei National University of the Arts.