Kamen Rider Gaim/Characters/Helheim Forest

A mysterious forest entered through cracks in space, home to the Inves and physical manifestation of DJ Sagara.

General Tropes

• Alien Kudzu: Played for horro - more than usual anyway. Most uses of this trope have it as a symptom of an alien threat; Helheim is the threat. It's an unfeeling force of nature, and Nature Is Not Nice.
• Arc Villain: Subverted. It only played the role of antagonist once in the short four episode span of the arc while Yggdrasil's Riders continue to play the role.
• Assimilation Plot: Adds entire worlds to itself, converting all animal life in them into its Inves hordes.
• Big Bad: Well, the closest we have to an official one, as it is the root of all the problems in the series.
• Blue and Orange Morality: According to its avatar, Sagara, it only wants to bring about the next stage of evolution.
• Grey and Gray Morality: Itself (as it only wants to evolve humanity and other species, while using morally negative acts) towards the Rider Alliance (who are not composed entirely of good people, but are still against the more antagonistic cast).
• Planetary Parasite: Overgrows entire worlds.

Inves

The Monsters of the Week summoned to fight in the Inves Game that dwell in the Helheim Forest. While the Inves Game is in action, they'll obey the one holding their Lock Seed and fight until ordered to retreat. However, they will enter a rampage if their Lock Seed were to be dropped. Some also emerge from dimensional tears to their dimension.

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• Airborne Mook: Eating unripe Lockseeds cause the Mook Inves to sprout wings in #3. Also the Komori Inves, by default.
• Alas, Poor Villain: Turns out that all of them, yes all of them are just innocent people and animals transformed because of the Helheim Forest.
• Animal Motifs: All of them notably seem to have animal themes to them.
  • Big Creepy-Crawlies: The Mook class Inves seem to be insect-based, as well as the Kamikiri Inves.
  • Panthera Awesome: The Byakko and Lion Inves.
  • The Marvelous Deer: Shika Inves.
  • Bat out of Hell: The Komori Inves
  • Full Boar Action: The Inoshishi Inves, only seen as an Evolved Inves.
  • Instant Awesome, Just Add Dragons: Seiryu Inves.
  • Our Monsters Are Weird: Hekija/Bixie Inves
  • Seldom Seen Species: The Yagi Inves
• Black Blood: They seem to possess this. Strangely, the only times you see it are when Marika strikes one in #22 and when Baron pierces Deemushu with a Lemon Energy Arrow in #26.
• Breath Weapon: The Seiryu Inves breathes blue fire, and the Komori and Bixie Inves' can shoot fireballs from their mouths.
• Broken Streak: Up until the debut of the Lion Inves, all of them have japanese versions of their names.
• Dark Is Evil: The Komori Inves.
• Degraded Boss: The stronger Inves' are reduced to a group of Elite Mooks by the Forbidden Fruit Saga.
• Home Field Advantage: They are all stronger in the Helheim Forest than they are when summoned by Lockseeds. This is evident to the simple book Inves are enough to give Gaim, Ryugen, and Baron trouble. In #41, Roshuo summoning a small group of them was enough to overwhelm Gaim Kachidoki Arms.
• Lightning Bruiser: The Evolved Shika Inves, both Seiryu Inves', Lion Inves, and the Inoshishi Inves.
• Made Of Iron: The Seiryu Inves, due to its powerful scales.
• No Sell: The Seiryu Inves, until the heroes switch to blunt force weapons.
• Technicolor Flame: The Seiryu Inves breathes blue fire as a sign of its power.
• Whip It Good: How the Kamakiri Inves uses its antenna in battle.

Overlords

Remains of true alien civilization known as the Femushinmu. They are an elite category of Inves that managed to retain their intelligence and receive great power form their transformation, capable of controlling lesser Inves and the Helheim Forest itself.

General Tropes

• Aliens Are Bastards: All of them except Roshuo and his queen.
• Aliens Speaking English: Subverted, they speak an alien language (though a cipher of Japanese). They have to learn Japanese, and even then they aren't Instant Experts except for Roshuo.
• The Beast Master: They can control Inves at well, except for each other.
• Colorful Theme Naming: When translated form their Cypher Language.
• Disc One Final Boss: They act as the main antagonists for the mid point of the show, but are defeated before the final act leaving the Kamen Riders themselves as the final villains.
• Foil: As noted by Redyue, to the Armored Riders as a whole. The Overlords survived Helheim by using its power to permanently mutate into Inves, while the Armored Riders safely channel Helheim's power while retaining their humanity. Basically, the Overlords gave into Helheim while humanity conquered the forest.
• Green Thumb: They control the plants of Helheim the same way they control other Inves.
• Monster Knight: They wear armor and carry weapons, setting them apart from their brethren.
• The Sociopath: All of the them, except for Roshuo.