The following is about significant events that happened in 2015.
- 15: Nexo Knights was given the internal green-light, beginning production.
- 9: Nexo Knights was officially revealed at New York Comic Con 2015. The first five Character Teasers were released on YouTube.
- 15: Three other Character Teasers were released on YouTube.
- 27: "Alliance of the Fortrex" was released on YouTube.