Sumipanda hosts the Selection Project idol audition reality show, concealing his identity as Jun Oshiruko—a former one-hit-wonder solo idol whose stalled career left him discouraged before adopting the Sumipanda persona. He appears as an anthropomorphic panda standing 158 cm tall and weighing 99.9 kg. His profile lists his age as "eternally 4 years old" with a January 1 birthday, while blood type and body measurements remain undisclosed. He speaks using the feminine first-person pronoun "atashi."

His signature catchphrase, "Let’s make it black and white!" or alternatively phrased "As a panda, I will make things black and white," reinforces his panda motif and punctuates the show. As primary emcee, he announces rules, tracks audience vote targets like "Yells" or "Cheerers," and highlights elimination risks. He acknowledges unprecedented outcomes, such as all contestant groups advancing past the first round simultaneously in the seventh season—a first in the show’s history.