Helena Gabrielle Otter is Ozzie’s 5-year-old little sister and the crew’s spark of joy. Helena wears a pink shirt, a blue jumper with a pocket, a white pull-on cotton diaper, white socks, a pink hair bow, red Mary Jane shoes, and a purple backpack in Season 3. In season 4, she only wears a pink shirt, a pink bib, a white pull-on cotton diaper, white socks, a pink beanie hat, pink booties with bows for laces, a purple backpack, and white round-rimmed clear goggles strapped to her face for glasses. Her voice sounded like Zowie from Rolie Polie Olie and Young Celeste from Babar. She’s sweet, nurturing, and curious—and though she’s the youngest, she often surprises the group with her bright ideas and empathy. Her bond with Ozzie is heart-meltingly strong.