Growing up as part of the Sheng Gong Yue Hakka opera troupe and touring frequently during his youth, Peng describes himself as a "child of the theater tent." In fifth grade, his parents sent him to study drama at the National Fu Hsing Dramatic Arts Academy (now the National Taiwan College of Performing Arts).
出身客家「勝拱樂」歌劇團，從小在野台打滾，形容自己是「戲棚下的囝仔」的彭偉群，小學 5 年級時被父母送進復興劇校（現國立台灣戲曲學院）學戲。