Decchi Agein is a general from the Phantom Thieves' Guild in Star Detective Precure! who came from London.
Decchi Agein is a cool and mysterious young man with an unprecedented method of using a calling card with a mysterious pattern and a specific time limit written down in seconds. He acts like a stage director, and is wary of a woman who gave him a lot of trouble.
(Source: Pretty Cure! Wiki)