Remedi

Queen Remedi is Mewt Randell's mother from Final Fantasy Tactics Advance. In the real world, she is dead, but in Ivalice she is alive, although in that world she is not what she seems. This Remedi is bent on sustaining the fantasy world by thwarting Marche Radiuju's efforts to revert it to normal. In fact, Remedi herself is part of the reason the fantasy world continues to exist, along with the five Totema (she herself is effectively a sixth Totema). When Judgemaster Cid leaves after learning that Ivalice is not "real", Remedi creates a dark version of Mewt called Llednar Twem, and sends it to get rid of Marche. She places a Fortune Law on Llednar, making him invincible, but despite his Hero Medal, he is not immune to Red Cards issued for violating Cid's Advanced Laws, leading to his first defeat. He suffers one more defeat (he fled when Cid showed up) before Cid obtains an Anti-Law to nullify Llednar's invicibility and uses it on him, allowing Marche to destroy him, outside of the royal family's summer retreat.

Battle Queen
Immediately following Llednar's defeat, Marche rushes in and discovers that Remedi has Mewt sealed away so that he can only speak to them. Mewt tells them that he wishes the world of Ivalice to remain, and Remedi immediately casts off her outer robes, draws a large blade and summons a copy of Famfrit and one of Adrammelech. During this first battle, Remedi will only use physical attacks, but she is quite powerful.

Li-Grim
After she is defeated in her battle queen form, Remedi reveals her true nature as the Li-Grim. This results in the final battle, during which Li-Grim, backed up by two copies of Mateus, will use a plethora of spells. She has the ability to change the laws at will, and can cast Descent which results in a random Totema attack. Once she is defeated for the second time, Mewt will be released from her power, and the world will begin to revert to normal.