The Dark Ladies and Prince Inferno
 

Name: Dark (Lady) Aqua
Age: Several days
Image: Like Lady Aqua; Colour
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

Dark Aqua loves to play mindtricks. She looks like an innocent doll, having a thing for Gothic Lolita clothes, but don't underestimate her. Her silence, her well meant smiles... its all fake. She will kill you without emotion and without hesitation.
Her attacks were: 'Dark Water... Dark Demise' and 'Dark Water Rage'.

Name: Dark (Lady) Gaia
Age: Several days
Image: Like Lady Gaia; Colour
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

While Lady Gaia gets her strength when being hurt, so does Dark Gaia. While kindness and forgiveness is not present within her, she does show a motherly nature. She only cares about her sisters and lord, having no problem with killing anything else in the world. She had bat-wings sticking out of her head.
Dark Gaia's attacks were: 'Dark Earth... Dark Demise', 'Dark Earth Thorns' and 'Dark Earthquake'. She had the most attacks from all the Dark Guardians.

Name: Dark (Lady) Ignis
Age: Several days
Image: Like Lady Ignis; Colour
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

Dark Ignis was an energetic and ruthless Guardian, wanting to kill with as much explosions as possible. She wasn't afraid of anyone and anything, willing to go as far as defying Lady Inferno.
Like the other Dark Guardians, Dark Ignis showed two attacks: 'Dark Fire... Dark Demise' and 'Dark Fire Chain'.

Name: Dark (Lady) Kim
Age: Several days
Image: Like Lady Kim; Colour
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

Like her light counterpart, Dark Kim is the leader of the Dark Guardians. She can keep everyone in check, even Dark Ignis (something her light counterpart can't). She is also easily bored, which causes her to destroy the thing that bores her, just for the fun of it.
Dark Kim's attacks were: 'Dark Spirit... Dark Demise' and 'Dark Spirit Chaos'.

Name: Dark (Lady) Luna
Age: Several days
Image: Like Lady Luna; Colour
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

Dark Luna is scary... very scary. She likes to torture toys and humans, especially if it means killing them. She often wonders how alive creatures would react to her powers... like how high their heads will fly if she uses her energy. From the Dark Guardians, Dark Luna was the most dangerous one, because she acted like a child but was the most unpredictable one.
Unlike the other guardians, Dark Luna only showed one attack: 'Dark Air... Dark Demise'.

Name: Dark (Lady) Tiamat
Age: Several days
Image: Like Tiamat
Home planet: Serenay Moon
Love Interest: Lord Inferno
Movie: Infestation
Originally created by: Kitty Ocean (writer)

Dark Tiamat never truly appeared; only as a spirit. However, she gave Tiamat a rough time. She was even refferred as 'The Guardian of Nightmares'.
She never showed an attack, but it can be guessed Dark Tiamat shared an attack like the others: 'Dark Dreams... Dark Demise'.

Name: Lady Inferno
Age: Beyond time
Image: Original looks still unknown, first concept here, Final concept still unknown
Home planet: Unknown
Love Interest: Lord Inferno and Prince Inferno
Movie: Infestation, but also Episode 85
Originally created by: Kitty Ocean (writer)

Lady Inferno was Lord Inferno's first project and thus named after himself. She was his female counterpart, showing no mercy no matter what. She is, however, always looking for the most profitable way and thus teamed up with Prince Inferno in Season 4. Lord Inferno never expected her to be disloyal to him, though this might be caused by the soul that hides within her body.
She is a soul within someone else's body (possession) and thus technically already dead. She showed four attacks in the movie Infestation and we all hold our breaths... what shall she show in Season 4?!
Her attacks in 'Infestation' were: 'Dark Rebirth', 'Dark Love', 'Poison Dream' and 'Inferno's Touch'.

Name: Prince Inferno
Age: A more recent vintage
Image: Unknown
Home planet: Serenay Moon
Love Interest: Lady Inferno
Movie First appearance: Episode 84
Originally created by: Rocket Stevo (writer)

Lord Inferno always plans decades ahead. He knows what will happen and is a master in chesslike games. When he was ready to 'off' Zach in an earlier season, he knew he had to lose. That way, it would seem like Zach won, while in fact he was infected with a new kind of curse, which eventually released Prince Inferno. He's one of Lord Inferno's latest projects and the most lethal one (even more lethal than Chavi and Lady Inferno!)
However, Lord Inferno did not expect Lady Inferno and Prince Inferno to betray him. Could it be caused by the soul that hides within Prince Inferno's body?
He already showed a deadly attack in episode 85: 'Dark Royal Inferno'.