Board Thread:General Discussion/@comment-4013721-20150706134933/@comment-26509603-20150707003308

Zg28 wrote: Maybe he thought that it was never important enough a situation to get it out and if you watched the first episode, sensei is deeply concerned by morro.

But Sensei Wu has almost died more than any other character in the series (it's a fact stated on his page). Wouldn't his near death experiences be important enough? And what about when the ninja were left behind on the Dark Island, and they discovered that the only way back was with the Golden Mech? Just before the Ultra Dragon came, he never thought to mention that the ninja could unlock their own dragons? Was showing Nya that he could summon his dragon really all that important? It served no purpose.