Chad Lee is the Blue Lightspeed Ranger of the Lightspeed Rangers and is the team's second in-command.
Known for his amazing aquatic skills, Chad often spends time scuba diving, feeling connected to the marine life. He brings to the team his exceptional martial arts ability, and water rescue skills.
Chad studied under a karate master named Tomashiro, who felt that Chad's true destiny was as a martial arts master and not a Ranger. Tomashiro then helped train a monster named Cyclopter, hoping to replace Chad as his best student (Cyclopter even defeated Chad in battle), until Cyclopter turned on him. Chad remembers everything Tomashiro taught him then and eventually defeats Cyclopter, and Tomashiro even comes to ask Chad for a tour of the Aqua Base.
Chad also temporarily had a relationship with the mermaid Marina, but they parted ways eventually. Chad becomes close with fellow Ranger Kelsey during the series.
After leaving Lightspeed, Chad became a lifeguard, but returned to help his team fight a revived Vypra with the Time Force Rangers.
- He is the first Blue Ranger part of the core team to have Battlizer like armor.
- He is also the second Asian-American Blue Ranger after Kai Chen from Power Rangers: Lost Galaxy.
- His personality is very similar to Harry Kim from Star Trek: Voyager.