Approved by Amaranth, original post by MeepBard
Little Cup is a well-established format in later generations where the cutest combatants compete at level 5 in a captivating competition! Uniquely, Gen 1 Little Cup allows the use of Pikachu, Clefairy and Jigglypuff, which would later become NFE from Generation 2 onwards, and later staples of LC, such as Porygon and Onix, are fully-evolved Pokemon and therefore illegal here. If you're interested in this tier, you can discuss it and find games in the RBY Discord!
Initial Viability Rankings (June 11, 2024)
S1:


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A:






B1:



B2:




C1:





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D:







E:











Challenge command:
/challenge gen1ou @@@ Adjust Level = 5, -All Pokemon, +LC, +Clefairy, +Exeggcute, +Drowzee, +Gastly, +Omanyte, +Staryu, +Abra, +Poliwag, +Slowpoke, -Dragon Rage, -Sonic Boom, -Wrap, -Fire Spin
These are early meta samples and some are a bit experimental, they will be updated as tournaments happen.





Fast Spam + Egg by Sabelette





Triple Water by Sabelette





Double Prio by Sabelette





Double Elec Double Water by Sabelette





Lead Orb Triple Psychic by Maris Bonibell





Lead Wag + Eevee by Maris Bonibell





Double Rat by Maris Bonibell





Triple Psychic + Gastly by Maris Bonibell





Fast Offense + Tini by zinnias





Triple Psychic Tini Digless by zinnias




























































RBY LC is still in the midst of finalizing a ruleset; the rules below are the current standard, but Tradebacks Clause removal and the addition of Sleep Moves Clause are presently being tested.
Pokemon Eligibility
In order to be used in LC, a Pokemon must comply with the following criteria:
Species Clause - One Pokemon of its species per team.
Tradeback Clause - Moves obtained via the Time Capsule in GSC are banned.
Evasion Clause - Minimize and Double Team are banned.
OHKO Clause - Horn Drill, Guillotine, and Fissure are banned.
Invulnerability Clause - Dig and Fly are banned.
Cleric Clause - Pokemon are healed prior to a battle, so no pre-status, etc.
Mods
These are mods implemented on Pokemon Showdown! for quality of life reasons.
Sleep Clause Mod - Only one Pokemon can be put to sleep by an opponent.
Freeze Clause Mod - Only one Pokemon can be frozen by an opponent.
Desync Clause Mod - Moves that would cause a desync on cartridge fail.
Banned Moves
Dragon Rage: This move always inflicts 40 damage on the foe. This move is obviously entirely unbalanced in LC, where the only Pokémon who gets anywhere near 40 HP is Jigglypuff, who still gets OHKOed.
Sonic Boom: This move always inflicts 20 damage on the foe. For similar reasons to Dragon Rage, Sonic Boom has no place in the tier. This is due to the move reliably 2HKOing or OHKOing every Pokémon in the metagame and being learned by the fastest Pokémon in Little Cup, Voltorb, allowing it to muscle past would-be checks like Rhyhorn at ~74%.
Wrap: Due to the way damage is calculated at level 5, Wrap was far too much for the tier - notably, AgiliWrap Dratini was able to effortlessly rip apart teams with virtually no counterplay aside from Gastly once it set up with Agility.
Fire Spin: For a very similar reason as Wrap, lead AgiliSpin Ponyta was just way too much for the tier when it was legal. Ponyta has a phenomenal 90 base Speed, only one point slower than the fastest Pokémon in the tier, Diglett and Voltorb. Getting off a Fire Spin allows it to either pivot into a threat for free, or tear through teams virtually unopposed lategame thanks to how damage calculation works with level 5 Pokemon, making partial trapping immensely powerful. Unlike AgiliWrap Dratini, setting up with Ponyta is not quite as easy — without Tradebacks moves, Ponyta misses out on Hypnosis, which granted it many more setup opportunities, and it does not appreciate Diglett and Staryu being on nearly every team. However, even without Hypnosis, the reward for getting off a Fire Spin is just too great for this metagame. It should be reiterated that Partial Trapping Clause is not in effect for RBY LC — Clamp is still legal, as Shellder is the only available user.
Pokemon Eligibility
In order to be used in LC, a Pokemon must comply with the following criteria:
- The Pokemon must be able to evolve.
- The Pokemon must be at its earliest evolution stage.
- The Pokemon must be at level 5.
Species Clause - One Pokemon of its species per team.
Tradeback Clause - Moves obtained via the Time Capsule in GSC are banned.
Evasion Clause - Minimize and Double Team are banned.
OHKO Clause - Horn Drill, Guillotine, and Fissure are banned.
Invulnerability Clause - Dig and Fly are banned.
Cleric Clause - Pokemon are healed prior to a battle, so no pre-status, etc.
Mods
These are mods implemented on Pokemon Showdown! for quality of life reasons.
Sleep Clause Mod - Only one Pokemon can be put to sleep by an opponent.
Freeze Clause Mod - Only one Pokemon can be frozen by an opponent.
Desync Clause Mod - Moves that would cause a desync on cartridge fail.
Banned Moves
Dragon Rage: This move always inflicts 40 damage on the foe. This move is obviously entirely unbalanced in LC, where the only Pokémon who gets anywhere near 40 HP is Jigglypuff, who still gets OHKOed.
Sonic Boom: This move always inflicts 20 damage on the foe. For similar reasons to Dragon Rage, Sonic Boom has no place in the tier. This is due to the move reliably 2HKOing or OHKOing every Pokémon in the metagame and being learned by the fastest Pokémon in Little Cup, Voltorb, allowing it to muscle past would-be checks like Rhyhorn at ~74%.
Wrap: Due to the way damage is calculated at level 5, Wrap was far too much for the tier - notably, AgiliWrap Dratini was able to effortlessly rip apart teams with virtually no counterplay aside from Gastly once it set up with Agility.
Fire Spin: For a very similar reason as Wrap, lead AgiliSpin Ponyta was just way too much for the tier when it was legal. Ponyta has a phenomenal 90 base Speed, only one point slower than the fastest Pokémon in the tier, Diglett and Voltorb. Getting off a Fire Spin allows it to either pivot into a threat for free, or tear through teams virtually unopposed lategame thanks to how damage calculation works with level 5 Pokemon, making partial trapping immensely powerful. Unlike AgiliWrap Dratini, setting up with Ponyta is not quite as easy — without Tradebacks moves, Ponyta misses out on Hypnosis, which granted it many more setup opportunities, and it does not appreciate Diglett and Staryu being on nearly every team. However, even without Hypnosis, the reward for getting off a Fire Spin is just too great for this metagame. It should be reiterated that Partial Trapping Clause is not in effect for RBY LC — Clamp is still legal, as Shellder is the only available user.


Exeggcute's fantastic defensive typing grants it key resistances to three of the most common attacking types in the metagame, notably making it the tier's best Diglett check. Additionally, its ability to spread both sleep and paralysis and fire off a hard-hitting Explosion on something troublesome makes it one of the most versatile and necessary Pokemon in the metagame. It is by far the defining support Pokemon of the tier, while also not being a slouch in the offensive department either with its threatening Psychic.












RBY infamously has lots of glitches, and one of those glitches is a basis for move and Pokemon legality here. Through glitches, it is possible to level a Pokemon up past 100, at which point you can use Rare Candies to level them up to 255, looping back to 0, and then up to level 5, retaining their level-up moves. The only caveat to this decision is that level looping, while replicable on cartridge, requires the use of Arbitrary Code Execution, which is typically frowned upon when it comes to tiering decisions, but future Little Cup generations utilize the Pomeg Glitch for similar effects, so this is fair game. This also allows Clefairy to be used in LC, since, tragically, it can only be obtained at level 6 minimum in both RBY and GSC.
Many Pokemon in RBY cannot have perfect DVs, but this is not an issue because trading back Pokemon from GSC is still legal even with Tradebacks Clause, so long as they have legally obtainable movesets in RBY; also, every Pokemon can use a set of DVs in RBY natively that would still give them maximum stats at level 5, so this is irrelevant anyway, as a DV of 13 or 11 or what have you won't even lower their stats. As for Stat Exp. or EVs, Pokemon can legally obtain just about any Stat Exp combination you'd like thanks to the Exp. All, which allows splitting stat experience across the party. If done correctly, it is possible to, for example, give a Pokemon zero Attack Stat Exp. by training on Magikarp, and this can also be done for other stats, such as using Diglett to train non-HP stats.
In other words, all DV and EV combinations are legal, and all level-up moves are legal with no incompatibilities.
Many Pokemon in RBY cannot have perfect DVs, but this is not an issue because trading back Pokemon from GSC is still legal even with Tradebacks Clause, so long as they have legally obtainable movesets in RBY; also, every Pokemon can use a set of DVs in RBY natively that would still give them maximum stats at level 5, so this is irrelevant anyway, as a DV of 13 or 11 or what have you won't even lower their stats. As for Stat Exp. or EVs, Pokemon can legally obtain just about any Stat Exp combination you'd like thanks to the Exp. All, which allows splitting stat experience across the party. If done correctly, it is possible to, for example, give a Pokemon zero Attack Stat Exp. by training on Magikarp, and this can also be done for other stats, such as using Diglett to train non-HP stats.
In other words, all DV and EV combinations are legal, and all level-up moves are legal with no incompatibilities.
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