|Relatives||Deep Blue and Masaya Aoyama|
|Team||Tokyo Mew Mews|
|V.A. (English)||Scottie Ray|
|V.A. (Japanese)||Megumi Ogata|
The Blue Knight is a mysterious alien who was born from Masaya's desire to protect Ichigo using some of Deep Blue's power. He fights alongside the Mews several times with the primary goal of protecting Ichigo. In Tokyo Mew Mew à la Mode, it is revealed that Masaya is no longer able to transform into the Blue Knight.
Predictably, the Blue Knight is very protective of Ichigo and states that he will do everything in his power to keep her safe. When he fights alongside the Mews, he will offer them encouragement and proves himself very knowledgeable when he provides the Mews with the weaknesses of various monsters they fight. The only time his personality is similar to Masaya's is during his final appearance when Masaya finally becomes conscious of the fact that he is the Blue Knight.
Unlike his other two alter egos, the Blue Knight has long blonde hair that is tied back in a low ponytail. He has the same bright blue eyes and pointed ears as Deep Blue and a skin tone that falls between Deep Blue's chalky white and Aoyama's tan. He wears the same long blue coat as Deep Blue, but unlike his counterpart he keeps it unbuttoned from the waist down, revealing a pair of short shorts and blue boots.