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RT-55J

RT-55J is a big sumo wrestler robot in the Mega Man X series. It was a popular yokozuna from the "Robot Sumo" (ロボット大相撲 Robotto Ōzumō) in a period of peace, but has gone Maverick and appears as an optional mid-boss in Sting Chameleon's stage in Mega Man X and the remake Mega Man Maverick Hunter X. Its special techniques are Kagizume Harite (カギヅメはり手 roughly "Claw Slap") and Tatakitsuke Nage (たたきつけなげ "Slam Throw").[1] It talks with a robotic voice in Mega Man Maverick Hunter X and the Rockman X manga.

Appearances[]

Mega Man X[]

RT-55J is an optional mid-boss that can be found above the tunnel in the forest. It guards the Light Capsule where the First Armor's Body Parts (Arm Parts in the remake Mega Man Maverick Hunter X) upgrade can be obtained. RT-55J attacks by jumping over the player and trying to catch him with its extendable claws, ramming the player in the wall if successful. If its claw hits a wall, sometimes it will pull itself into the wall to strike the player along the way. RT-55J also attacks with punches in Mega Man Maverick Hunter X. Its durable claws will repel all attacks, but the rest of its body is vulnerable. Attacks should be focused on the robot's head or its torso when its claws are deployed.

Strategy[]

RT-55J will try to jump on X, and, if in range, he will shoot a claw out at X to try and grab him to slam him into a wall. If X has the Arm Parts upgrade, keep charging to full level. If not, don't waste time charging, just shoot him rapidly. A good strategy is to wall kick up a wall while he's jumping at X, then jump over and in front of him. He will try to jump on X or try to grab him with one of his claws. If RT-55J uses the claw, dash out of range and rapidly attack the robot. It will cause much more damage than a single charge shot. But even better is charge up while wall jumping, and do the aforementioned strategy, and when he sends out his claw, dash out of the way, release the charge shot and hit him with a flurry of normal shots.

Another easy strategy is to stay on the far edge of the screen and wait for RT-55J to jump. When he does, dash under him (assuming X has the Foot Parts, from Chill Penguin's stage). Take a charged shot at his head and repeat. As long as the player is far enough across the screen, he will always jump instead of using his claw.

It is weak to Boomerang Cutter, but as it lacks an invincibility period, multi-hitting attacks like Storm Tornado are more effective.

Mega Man X DiVE[]

RT-55J appears as the mid-boss of the Air Force stage, having a behavior similar to the Mega Man Maverick Hunter X appearance. There is also blue RT-55J appeared in the Jakob Orbital Elevator.

Some unnamed variants with the same behavior (but varying stats due to the different difficulty levels available) appeared only in events. Including White Day variant in the Re-taking Candy Factory! event, Valentine's Day variant in the Colonel's Valentine Challenge event, and Thug variant in the Attack of the Thugs event.

Blue RT-55J

Blue RT-55J

White Day version

White Day version

Valentine's Day version

Valentine's Day version

Thug version

Thug version

Other appearances[]

Hits Data Chart[]

Amount of shots/hits from weapons it takes to destroy RT-55J.

Mega Man X[]

X Buster Shotgun Ice Electric Spark Rolling Shield Homing Torpedo Boomerang Cutter Chameleon Sting Storm Tornado Fire Wave Hadouken
1:1:2:2 1:2 1:2 1:2 1:2 3:4 1 1:2 1:2 32

Notes

  • For X-Buster, the four damage values are listed according to how long the weapon is charged. The first number is damage done with uncharged shots; the second number is when the weapon is charged slightly (cyan); third number is when the X-Buster is charged even more (yellow); fourth number is when the X-Buster is fully charged (pink).
    • Sometimes, an uncharged shot will inflict two units of damage instead of one, if the enemy has just started moving or if X fires a shot while he is dashing.
  • For the eight Special Weapons, the first number is damage done when the weapon is used in normal fire; the second is when the weapon is used in its charged state.
    • For Chameleon Sting, as the weapon's secondary fire renders X invincible and is incapable of inflicting damage on enemies and bosses, the damage values list only the normal fire of this weapon.
  • For Homing Torpedo, Boomerang Cutter, Storm Tornado and Fire Wave: the secondary fire for these weapons are capable of inflicting multiple hits on a target, so the values listed on the second number is the amount of damage done per hit, not the total amount of damage done.
  • RT-55J seems to have a slight invincibility frame, so multiple shots may not count towards damage to him.

Other media[]

In the Rockman X manga, RT-55J appeared in the forest where Sting Chameleon was hiding, and X obtained an Body Parts after its defeat.

In Irregular Hunter Rockman X, X fights against RT-55J in the area controlled by Chill Penguin.

RT-55J appeared as part of Sigma's Mechaniloid army in Archie Comics' Worlds Unite, and is taken down by Knuckles and Ken in Sonic the Hedgehog #275.

Gallery[]

Mega Man Maverick Hunter X concept art

Mega Man Maverick Hunter X concept art

Mega Man Maverick Hunter X render

RT-55J in Mega Man X DiVE

RT-55J in Mega Man X DiVE

TEPPEN card

TEPPEN card

RT-55J as E. Honda performing Hundred Hand Slap in TEPPEN card

RT-55J as E. Honda performing Hundred Hand Slap in TEPPEN card

RT-55J as E. Honda performing Sumo Headbutt in TEPPEN card

RT-55J as E. Honda performing Sumo Headbutt in TEPPEN card

Rockman X manga

Rockman X manga

Irregular Hunter Rockman X

Irregular Hunter Rockman X

Worlds Unite

Worlds Unite

Trivia[]

  • Interestingly, RT-55J bears a striking resemblance to Auto, Dr. Light's robot assistant, both in the color scheme and appearance. Given the fact this robot guards one of Light's capsules, it is unknown if Auto is derived from RT-55J's design.
    • On a related note, the first part of its name, RT, contains the same first and last letters of "Rightot", the original Japanese name of Auto.
  • There is a glitch that can be performed when fighting RT-55J. If the player manages to be grasped by it the moment it is destroyed, X will be frozen in the air, as the game still registers that he is being held. The player then is forced to reset after this.
  • While RT-55J can be fought any time X revisits Sting Chameleon's stage in the SNES version of Mega Man X, he cannot be faced in Maverick Hunter X once the Arm Parts have been collected.

References[]

Mega Man X
Stage Select bosses
Chill PenguinSpark MandrillArmored ArmadilloLaunch Octopus
Boomer KuwangerSting ChameleonStorm EagleFlame Mammoth
Other bosses
VileBospiderRangda BangdaD-RexVelguarderSigma
Special Weapons
Shotgun IceElectric SparkRolling ShieldHoming Torpedo
Boomerang CutterChameleon StingStorm TornadoFire Wave
Stages
Highway StageSnow Mountain StagePower Plant StageGallery StageOcean Stage
Tower StageForest StageAirport StageFactory StageSigma's Hideout
Miscellaneous
Armor PartsHadoukenMega Man X WalkthroughList of Mega Man X enemiesDamage Data ChartScript
Mega Man X DiVE
Characters
Main character
The Player
Supporting cast
RiCOViAiCODroitclairAngepitoyeirEratoeir
Other characters
EddieRushBeatTrebleCyber-elvesModel XModel ZLan HikariEugene ChaudMayl Sakurai
Hunter Programs
XZeroAliaBlack ZeroMassimoAxlFerhamUltimate Armor XVileCinnamon
MarinoPalletteLayerMega ManProto ManSuper Mega ManRollIrisZero (Z)Leviathan
Awakened ZeroSigmaCielAilePandoraMegaMan VolnuttTron BonneCopy XMegaMan.EXEProtoMan.EXE
Bass.EXEOmegaMagma DragoonBass GSHarpuiaRiCOMegaMan Volnutt Alt.ServbotRoll Caskett
ColonelIris -another-BassVile MK-IIZero NightmareRathalos Armor XDark MegaMan.EXESuper BassΧ -kai-DiVE Armor X
Star Force Mega ManHarp NoteRogueRYUCHUN-LIAKUMAiCODynamoBass XXRoll.EXEFourth Armor XDroitclairAngepitoyeirGateViAGaea Armor XEratoeirNanaBass Cross MegaManDr. Light the Martial Artist
Gameplay
Deep LogCardsDeep ElementIrregular DataItemsScriptScheduleStagesWeapons
Rockman ✕over
Bosses
World 1 Icy PenguigoSpark MandrillerStorm EagleedBurnin' NoumanderVAVA
World 2 Boomer KuwangerLauncher OctopuldArmor ArmargeSting ChameleaoSigma
World 3 Cut ManElec ManIce ManFire ManWily Machine 1
World 4 SharkMan.EXEHeatMan.EXEWoodMan.EXEThunderMan.EXEDream Virus
World 5 Cygnus WingQueen OphiucaGemini SparkCancer BubbleAndromeda
World 6 AztefalconMaha GaneshariffBlizzack StaggroffHerculious AnchusFairy Leviathan
World 7 Optic SunflowerAvalanche YetiBurn RoosterBamboo PandamoniumSigma
World 8 Junk ManSpring ManSlash ManShade ManForte
World 9 Spade MagnesQueen VirgoJack CorvusGrave JokerCrimson Dragon
World 10 FistleoLurerreHurricauneHivoltSerpent
World 11 DiveMan.EXEGroundMan.EXETenguMan.EXEBlastMan.EXEGlaga
World 12 Rosso MBlu DOro SVerde RNero L
25th Anniversary Special World Toad ManGuts ManShadow ManAir ManSkull ManWily Capsule
X Special World DynamoZainHigh MaxDoubleBlack Zero
Team Battle Bosses Armor SoldierMacMecha DragonMole BorerRT-55J
Giant MetallSilver MetallGold MetallYoshida
Master Bosses Arcade ManBass.EXEBospiderD-RexDark Ray Bit
UtuborosVan PookinYellow DevilElementMan.EXE
Enemies
Land enemies Astro ZombiegBeetankCrabs-KCrazy RazyCrickaleapGarm
Hot RoaderMetall FXNeo MetallPeterchyRay BitRhino HornSpiky
Aerial enemies Batton BoneBattonBatton M48Bunby Top DXCondoroidCrowcarCrusher
Dark ReaperFighter PlaneFishyHeli MetallKiller EyeMAME-QSci-sensor
Related
Battle MemoryElementsKalinka CossackOVER-1