Long Boys
This Rank 10 Xyz monster boasts 4000 defense and the ability to make itself or another card immune to card effects, making it difficult to remove but prime bait for Kaijus.
What is Number 81: Superdreadnought Rail Cannon Super Dora?
The original three-material Fusion monster, which has since had two retrains with the exact same Fusion Materials.
What is Blue-Eyes Ultimate Dragon?
Prior to its extremely boring errata at the beginning of the Link era, this was the only card that could flip a monster into face-down Attack Position.
What is Darkness Approaches?
The first level 4 monster to have 1900 attack.
What is Gemini Elf?
This monster was the original member of an archetype that's become well-known for utilizing one of the most powerful forms of removal in the game.
What is Dogoran, the Mad Flame Kaiju?
A very large Rock monster made by fusing two other very large Rock monsters, it boasts 4000 attack and a free negate effect once per turn.
What is Imperion Magnum the Superconductive Battlebot?
This Fusion monster is Dark attribute, unlike the rest of its archetype, and acts as an incredibly strong OTK enabler, boasting the highest attack power of its archetype and attacking all monsters on the opponents' field - with piercing damage to boot.
What is Chaos Ancient Gear Giant?
This Xyz monster requires the most materials to be detached for the use of a single effect.
What is Tellarknight Ptolemaeus?
The first Synchro monster that required exclusively other Synchro monsters as material.
What is Shooting Star Dragon?
This good boy can Special Summon itself alongside another member of its archetype, in addition to spreading counters around.
What is Alien Dog?
This Synchro monster can treat itself as a Tuner and modulate its level - useful for a Synchro-focused archetype, especially since it's Level 12 to start with.
What is Assault Blackwing - Onimaru the Divine Thunder?
This 4000 attack beatstick requires four completely unrelated monsters to summon, and can return those monsters to the field by tributing itself.
What is D.D. Jet Iron?
This monster has the unique effect of shuffling itself into your opponent's deck.
What is Parasite Paracide?
The first card that could Special Summon monsters from the Main Deck.
What is Elegant Egotist?
This doggie is capable of searching a fairly wide variety of monsters when it's destroyed, including Lava Golem, Earthbound Greater Linewalker, SPYRAL Sleeper, and Poly-Chemicritter Dioxogre.
What is Doomdog Octhros?
This Gemini support monster can be used to give all other Gemini monsters on the field their effects, and can be easily made with any two Gemini monsters.
What is Superalloy Beast Raptinus?
This Xyz monster requires three Level 10 monsters to summon, but can destroy your opponent's Spell and Traps while also boasting a whopping 5000 attack.
What is Superdimensional Robot Galaxy Destroyer?
This Synchro monster is the only one in the game that requires exactly five monsters to summon.
What is Flower Cardian Lightflare?
The first card to destroy all cards on the field.
What is Final Destiny?
This monster was one of its archetype's original boss monsters, requiring three tributes for a Special Summon and halving the opponent's Life Points after a delay.
A Pendulum retrain of a nightmarishly powerful old monster, it offers a slightly watered down version of the original effect alongside the ability to retrieve banished monsters.
What is Chaos Emperor, the Dragon of Armageddon?
This offshoot of Stardust Dragon requires exclusively Synchro monsters to summon, and was originally featured in the manga as a counterpart to the significantly more popular Shooting Quasar Dragon.
What is Stardust Sifr Divine Dragon?
Several very old cards have other very old cards created for the purpose of countering them specifically (Anti Raigeki, Jar Robber, etc). This is the only one that has two such counter cards.
What is Monster Reborn?
The first Xyz monster that detached more than one material for its effect.
What is Evolzar Laggia?
This unfortunately underpowered hand trap features a cute design and the ability to gain Life Points as your opponent Special Summons monsters.
What is Ghost Sister & Spooky Dogwood?