Honestly, one of the best character introductions ever.

A whole arc where the new character has the whole team fighting for their lives. And Kimberly confronting Tommy at school without powers and he just goes all Heero Yuy on her.

It made his addition to the team feel earned. And the Green White Ranger that he became was a character from a completely different show. The localization of Power Rangers was such a production that it became something original.