|Attack Name:||Dark Thunder|
|Attack Name (kanji/kana):||ダルク・サンダー|
|Performed by:||Petz, Marduk (video games only)|
|Item Required:||Black Moon Stick (anime only)|
|First Used (anime):||Cold Hearted Rubeus! The Four Sisters of Sorrow|
|First Used (manga):||N/A|
|First Used (game):||Sailor Moon: Another Story|
Dark Thunder was an attack used by Petz in the anime and the video game Sailor Moon: Another Story, in which she fired a blast of black lightning at her target. In the anime she only called the name of the attack when she was wielding the Black Moon Stick, though in Another Story she did not require the Stick to use this attack.
In Another Story, Marduk was also able to use this attack as well as Petz.
- Though Petz only used this attack by name in episode 72 of the anime, her unnamed lightning attack used in other episodes and her Dark Power attack had a similar appearance.
- In the Polish dub, this attack was called "Czarne grzmoty, do roboty" (Black thunder, to work).