[MattEmily]

I don't believe Maligore and Dark Specter are related at all.

In response to BT's post, it definitely wasn't a mistake by the Production Crew. They knew the Dark Specter costume was indeed the Maligore costume from the movie.

MiC is correct but only partially. Dark Specter technically did have a Sentai counterpart but not one that had a suit. Apparently they were planning on using the Goldgoyle suit for their Dark Specter suit but the Goldgoyle suit didn't hold up well so they opted for the Maligore suit.

Also of course the crew was being cheap. It's nothing new with them reusing old suits for new monsters. It has happened countless times over the years.

Turkey Jerk. Grumble the Magic Elf. Storybook Rangers Snow Monster.
Plague Patrollers. Repellator.

Metal Mangler. A bunch of monsters in the recruiting scene in the episode with the Torch Tiger monster.

The monster in the Ninja Turtles/Space crossover.

Brunt, the monster in the episode that captured the GalactaBeasts.

The first demon Lightspeed Rescue destroyed.

The Mut-Orgs.

Need I say more?