Moonheart - G1

In comparison to her younger twin, Moonheart is the calm and collected one. As the member of the 4 Guards with power over water, she uses her Blizzard Blade to freeze foes. Talented and loyal, Megaempress considers her a reliable soldier and often sends her on missions.

Moonheart also has some medical knowledge and is the team's doctor.

Moonheart was created as a pair with Lunaclub by Megaempress to be part of her elite 4 Guards. She worked under Soundwave as a medic in the early days of the war, developing a crush on him.

Joining forces with Lunaclub and Trickdiamond in 2021, Moonheart stormed Shockwave's facility where Megaempress and Flowspade were kept in stasis. With their empress awake, the 4 Guards joined her in interrupting a battle between Grand Galvatron and Sky Reign. After her empress split Sky Reign into his constituent Autobots, Moonheart sedated the limb components with her healing pheromone and, after commanding them to erect their combiner joints, amputated them to acquire the joint energon within. Using this energon, Moonheart and the rest of the 4 Guards combined with Megaempress to form Megatronia to combat Optimus Maximus.