|Debut||The Chase Smells Like Cheesecake and Death|
|Residential Planet||Eleanor City|
|Japanese Voice||Sukekiyo Kameyama|
He is shown to be newly wedded to a girl named Julietta. In their apartment on their wedding night, he gets ready to take a shower to get ready to have a romantic night with Julietta but then Kei barges in to chase after the genetically engineered cat Guillaume de Malatesta XIII who got into there apartment from hiding in one of there suitcases and jumps out the window. Julietta mistakens Kei to be another woman he may have been involved with and threatens to divorce him. After he was able to quickly make up with her again, he then proceeds to take his shower but then Yuri who followed Malatesta's footprints into the bathroom causes Julietta to get mad again and throw stuff at him threatening to divorce him for real this time. It was not revealed if he was able to clear the second misunderstanding.
- He is named after Romeo Montague from the well known William Shakespeare play "Romeo & Juliet".