Alan

The anime gives him only a rough sketch: black hair paired with blue eyes.

The anime barely fills in who he is, since he lives almost wholly inside Minako's memories. The picture that forms is of a gentle man drawn to both Minako and her dearest friend, a man whose heart settles on Katarina rather than on Minako herself.

Alan shows up in episode 42, seen purely through Minako's flashbacks. Their paths cross in England about half a year before, back when she is digging into odd Dark Kingdom activity there, and she loses her heart to him. She then brings him around to meet Katarina, her closest friend and an officer with Interpol. Katarina, with no idea how Minako feels, falls for him too. One evening, while she and Sailor V stake out a harbor warehouse, a crook lobs a grenade and flattens the building. Convinced Sailor V has perished, Katarina takes comfort in Alan, who turns up right after the explosion, while the battered heroine slips into a nearby alley and, watching them hold each other, grasps that love has bloomed between them. Minako keeps her survival a secret and steals away from England, telling herself the pair will fare better without her.

A full six months on, Kunzite discovers the tie between Sailor V and Katarina and schemes to brainwash her into revealing who the guardians really are, only for the plot to fall apart. He instead warps Katarina into a youma, whom Sailor Moon soon heals. The whole affair frees Minako to pardon her friend and admit that Alan sits beside the one he genuinely loves, and she surrenders what lingering feeling remains, captured in a snapshot of the three of them. That attachment trails faintly into Sailor Moon R, where she dreams of him, embraces Artemis in the belief that the cat is Alan, and calls his name aloud, and where Makoto needles her for failing to shake off the breakup, until she finally puts him behind her for good.