[[caption-width-right:300:The one that started it all.]]

->''"[[ByThePowerOfGrayskull JOUCHAKU!!]][[note]]Electroplate![[/note]]"''

''Space Sheriff Gavan'' (''Uchū Keiji Gavan'') is the first installment of the ''Franchise/MetalHeroes'' franchise, as well as the first part of the ''Space Sheriff trilogy''. It aired from 1982-1983.

Sometime in the [[TwentyMinutesIntoTheFuture not so distant future]], Earth is invaded by the evil Don Horror and his intergalactic criminal organization known as "Makuu".[[note]]A portmanteau of the words for "archdevil/BlackMagic" and "evil".[[/note]] Rather than cause the EndOfTheWorldAsWeKnowIt, Don Horror plans to cause fear and panic amongst the populace and steal every valuable his minions can get their hands on. To help him achieve his ends, he can command his minions to use an "Axial Divertor" to suck victims into a [[AnotherDimension frightening otherworld]] called "Makuu Space", where the Makuu gain 3x their ordinary power.

To thwart their plans, Retsu Ichijoji of the [[SpacePolice Galactic Union Patrol]] arrives on Earth with his partner Mimi to protect the planet. Donning a futuristic suit of PoweredArmor, Retsu fights the never-ending battle against evil as Space Sheriff Gavan.

In 2012, a film revival/sequel called ''Film/SpaceSheriffGavanTheMovie'' was released following Gavan's appearance in ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie''.

A [[Recap/SpaceSheriffGavan Recap page is in progress.]]

!!''Space Sheriff Gavan'' provides examples of the following tropes:

* AnotherDimension: Don Horror can send Gavan to an alternate dimension, Makuu Space, in which the MonsterOfTheWeek's strength and powers are increased threefold.
* BallOfLightTransformation: Gavan can transform into a blue ball of light to fly around at his enemies. He once met an opponent with a similar power, and they tussled for a while in the air as blue and red balls of light, respectively.
* ByThePowerOfGreyskull: "JOUCHAKU!", which is the Japanese word for electroplating.
* ChekhovsGunman: A minor victim of the week comes back in the final episode [[spoiler:as his successor Sharivan!]]
* CompletelyDifferentTitle: The series is known in France as ''X-Or''.
* CoolBike: The Cyberian, a cherry-red four-wheeled superbike that can fly. Gavan uses it to chase the MonsterOfTheWeek into Makuu Space in order to finish it off at the end of each episode. Gavan Type-G has his own, but it's blue instead of red.
%% * CoolShip: Girandol
* FinishingMove: "GAVAN DYNAMIC!" A powerful LaserBlade slash that can either split the monster in half vertically or just straight up cause it to explode.
* GuestFighter: Served as one for ''VideoGame/StreetFighterOnlineMouseGeneration'' in probably [[VideoGame/{{Capcom}} Capcom's]] weirdest VideoGame/CapcomVsWhatever [[CrossOver crossovers]] ever.
* HalfHumanHybrid: Gavan is the son of a human woman and a HumanAlien man.
* HandBlast: "LASER Z-BEAM!" Arrow-shaped bolts of energy that fire forth from Gavan's index and ring fingers.
* InstantArmor: Gavan can materialize his combat armor in .05 seconds. [[OncePerEpisode Every time this happens]], the narrator informs the audience of this fact, then shows a slowed-down version of the Jouchaku/electroplating process where we can actually see the Gavan suit being beamed down from Gavan's ship.
* LaserBlade: TropeNamer!
* LastEpisodeNewCharacter: Series/SpaceSheriffSharivan appears in the last episode when Gavan's on the ropes.
* MilestoneCelebration: Returns for the ''Metal Heroes''' 30th anniversary in one of ''Series/KaizokuSentaiGokaiger's'' movies, ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie'', with the success of that movie resulting in the start of a new generation in ''Film/SpaceSheriffGavanTheMovie''. Geki/Gavan Type-G and Sherry appeared in a two-episode arc of ''Series/TokumeiSentaiGobusters''.
* MonsterOfTheWeek: BEM Monsters and Double Monsters. With a rare few exceptions, Gavan kills the monster at the end of every episode, and faces off against a new one the following week.
* {{Mooks}}: Don Horror systematically sends a bunch of disposable foot soldiers called Crushers to try and soften up Gavan before deploying the MonsterOfTheWeek.
* NamesToRunAwayFromReallyFast: The former Space Sheriff who betrayed Gavan's father in the past is named Hunter Killer. Gee, with a name like that, you'd think his FaceHeelTurn wouldn't have surprised anyone. Not to mention Don Horror...
* NiceGuy: Outside battle, Retsu/Gavan is a pretty nice and friendly guy.
* OriginalGeneration:
** Gavan's EvilCounterpart Gavan Bootleg, who appears in ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie''.
** Also in the video game ''Space Sheriff Spirits'' with the seemingly evil Variozecter [[spoiler:who turns out to be the Combat Suit of the revived Hunter Killer]].
* ProductionForeshadowing: ''Space Sheriff Gavan'' is referenced in Episode 45 of ''Series/TaiyouSentaiSunVulcan''. The episode introduces a space pirate named Inazuma Ginga, who was once caught in a trap by the Galactic Police, fleeing to Earth from them. Former Super Sentai writer Shozo Uehara was already working on ''Gavan'' by the time ''Sun Vulcan'' was ending and ''Gavan'' began airing on the same month ''Sun Vulcan'' concluded.
* RentAZilla:
** Dol, the bottom half of the Dolgiran in attack mode, qualifies as one, measuring 200 meters in length and weighing a whopping 2000 tons.
** Sometimes the MonsterOfTheWeek becomes kaiju-sized.
* ShoutOut:
** Received one from Franchise/RoboCop, whose suit was inspired by Gavan's.
** Gavan's name is a ShoutOut to French actor Creator/JeanGabin, famous for playing numerous police officers, among many other roles.
* SpacePolice: [[CaptainObvious It's in the title]].
* SuspiciouslySimilarSubstitute:
** Marin becomes this to Mimi when the latter is PutOnABus for a few episodes.
** Geki (Gavan Type-G) is one for Retsu (the original Gavan), though they both appear in the movie.
* TransformationIsAFreeAction: Justified, due to the whole transformation sequence taking 0.05 seconds.
* TookALevelInJerkass: Retsu, towards Geki in Super Hero Taisen Z.
* TransformationSequence: Naturally! The pose is quite well known as well. [[http://youtube.com/watch?v=bDofpxNH1Bc Ohba Kenji doing it in 2009 or so.]]
* TransformingMecha: The bottom part of Gavan's spaceship, Dolgiran, can separate and transform into the Chinese dragon-styled Denshi Seijuu (Electronic Starbeast) Dol, which is armed with eye lasers, fire breath, and a nasty tail whip attack.
* UnrealisticBlackHole:
** Makuu Space is entered via a black hole that causes Earth to change its axis instead and enter the space of sucking up the entire solar system. To make it crazier, Gavan's Cyberian somehow minimizes harmful effects on the planet once entered.
** The video game ''VideoGame/SpaceSheriffSpirits'' and the ''Gokaiger'' crossover movie take it to another extreme where it implies that Makuu Space has breathable oxygen with the latter establishing that the dimension had its own prison tower (which never appeared or even mentioned in the series).
* VoluntaryShapeshifting: Mimi, with her "Laser Vision" pendant.
* WrestlerInAllOfUs: Gavan shows shades of this with his Dimension Bomber attack.