Love Interest: Queen Beryl, Hints of Mizuno Ami
Friends: Furuhata Motoki (whether Nephrite likes it or not)
Allies: Shitennou(sometimes), Youma, Metaria, Queen Beryl
Enemies: Shitennou(sometimes), Senshi, Endymion(sometimes), Serenity, Luna, Artemis, Kuroki Mio
Single Attacks: Seems to prefer hand to hand combat, although he is capable of blocking and using energy blasts
Items: Carries a straight sword, but attacked Dark Mercury with a buzz-sawish blade.
Key Points
Nephrite was the second General to be called forth. He's quite strong, with a hot temper and a desperate need to please Queen Beryl. Unfortunately, while he tries very hard, he doesn't seem to be the sharpest sword in the armory.
Nephrite's orders were to find the Illusionary Silver Crystal (Ginzuishou) while Jadeite collected human energy. Without any reliable information, however, Nephrite continually chased after both fake crystals and the fake Princess. After repeated failures (and attacking Dark Mercury after she mocked him), Beryl got fed up and banished him from her sight.
Despite Beryl's continual dismissal of him, Nephrite's loyalty never waivered. As he sat moping in some corner of the Dark Kingdom, Dark Mercury took pity on him and brought him a new cape to replace his torn one.
When Sailor Moon finally freed Mercury from the Dark Kingdom's control, it was Nephrite who prevented Kunzite from killing her. Unfortunately, this act may have sealed his fate, and he was sacrificed by Beryl to prove that she really would hurt the Shitennou if Endymion did not come to the Dark Kingdom.
Luckily for Nephrite/Ami shippers, he quickly reappeared in human form and by a few quirks of fate ended up working with Motoki and Crown. Clumsy in his human form and extremely angry at the world at large, he spent a good deal of his time taking out his frustration on both Motoki and the various equipment at Crown until more kindness from Ami sent him moping again.
Nephrite no longer found himself so desperate to return to the Dark Kingdom and Beryl...