Johnson, a 19-year veteran of Nickelodeon, has been the driving force behind Nick Jr. and its preschool properties including Blue's Clues, Dora the Explorer, Go, Diego, Go!, The Wonder Pets!, The Backyardigans, among others. In her new role, Johnson will oversee development and production for all preschool programming across Nickelodeon networks, including Nick Jr., Nickelodeon's programming block dedicated to preschoolers and Noggin, Nickelodeon's commercial-free digital educational network for preschoolers, states an official release.

"Brown has pioneered genuinely interactive TV and created a place where parents and kids will find the most diverse, unique programs and characters around," said Ascheim. "Under her leadership, Nickelodeon Preschool will continue these traditions and invent new ways for the audience to play along, new ways for parents to feel great about our brands."

Weiss will report to Johnson and expand her role to develop and produce the next generation of series.

In addition, Leaney will also report to Johnson and will bring her branding experience and creative eye to Nick Jr. and Noggin. In addition, Leaney will partner with Nickelodeon marketing and Nickelodeon digital to continue to build both brands.