Kids' WB Jr[]
2009-2020[]
On July 12, 2009, Kids' WB Jr was launched as a preschool block on Kids' WB. The block aired for the final time on July 17, 2020 before it became Jr WB on July 20, 2020.
Jr WB[]
2020-present[]
On July 20, 2020, Kids' WB Jr became Jr WB.