Example gym trainer json

{
    "pokemon": [
        {
            "name": "Snivy",
            // No min level = any level lower than max level.
            "maxLevel": 16, // Max level that the Pokémon will appear at.
            "sets": [
                {
                    // Simplest moveset: four definite moves.
                    "move1": ["Leaf Tornado"],
                    "move2": ["Growth"],
                    "move3": ["Twister"],
                    "move4": ["Round"],
                    "ability": ["Overgrow"], // Choose which Ability to use.
                    "heldItem": ["Miracle Seed"] // Single choice for held item.
                    // Default, random Nature, no EVs. Makes it easier to face in battle.
                    // Note: IVs are all 31 unless specified otherwise.
                }
            ]
        },
        {
            "name": "Servine",
            "minLevel": 17,
            "maxLevel": 35,
            "sets": [
                {
                    "move1": ["Giga Drain"],
                    "move2": ["Reflect"],
                    "move3": ["Light Screen"],
                    "move4": ["Glare", "Leech Seed", "Synthesis", "Toxic"], // Multiple choices for a move; randomly choose one.
                    // No Ability chosen. Can be any possible Ability (either Overgrow or Contrary in this case).
                    "heldItem": ["Light Clay"],
                    "nature": ["Bold"],
                    "evHP": 252, // Define any necessary EVs: evHP, evAtk, evDef, evSpAtk, evSpDef, evSpeed
                    "evDef": 252,
                    "evSpDef": 4
                },
                {
                    // Second possible set for Pokémon.
                    "minLevel": 31, // Only use the set at higher levels.
                    "move1": ["Leaf Blade"],
                    "move2": ["Coil", "Swords Dance"],
                    "move3": ["Aqua Tail", "Iron Tail", "Return"], // Pick any two of three. Don't choose the same move twice.
                    "move4": ["Aqua Tail", "Iron Tail", "Return"], // Always set happiness to 255 for Return.
                    "ability": ["Overgrow"],
                    "heldItem": ["Muscle Band", "Miracle Seed"],
                    "nature": ["Adamant", "Jolly"], // Can be either of these two Natures.
                    "evAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252
                }
            ]
        },
        {
            "name": "Serperior",
            "minLevel": 36,
            "sets": [
                {
                    "move1": ["Giga Drain"],
                    "move2": ["Leech Seed"],
                    "move3": ["Substitute"],
                    "move4": ["Synthesis"],
                    "heldItem": ["Leftovers"],
                    "nature": ["Bold"],
                    "evHP": 252,
                    "evDef": 252,
                    "evSpDef": 4
                },
                {
                    "minLevel": 45,
                    "move1": ["Leaf Storm"],
                    "move2": ["Dragon Pulse"],
                    "move3": ["Hidden Power Fire", "Hidden Power Rock"], // Automatically set IVs for a maximum-power Hidden Power.
                    "move4": ["Glare", "Giga Drain", "Taunt"],
                    "ability": ["Contrary"],
                    "heldItem": ["Life Orb", "Grass Gem", "Leftovers", "Miracle Seed"],
                    "nature": ["Timid"],
                    "evSpAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252
                }
            ]
        },
        {
            "name": "Jumpluff",
            "minLevel": 27,
            "sets": [
                {
                    "move1": ["Acrobatics"],
                    "move2": ["Sleep Powder"],
                    "move3": ["Seed Bomb", "U-turn"], // Don't duplicate U-turn, but otherwise choose freely.
                    "move4": ["Toxic", "Memento", "Stun Spore", "U-turn"],
                    // No held item.
                    "nature": ["Jolly"],
                    "evAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252
                },
                {
                    "move1": ["Acrobatics"],
                    "move2": ["Sleep Powder"],
                    "move3": ["Seed Bomb", "Stun Spore"],
                    "move4": ["Rage Powder"],
                    "heldItem": ["Focus Sash"],
                    "nature": ["Jolly"],
                    "evAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252,
                    "doubleOnly": true // Only appears in double battles.
                }
            ]
        },
        {
            "name": "Torterra",
            "minLevel": 32,
            "sets": [
                {
                    "move1": ["Wood Hammer", "Seed Bomb"],
                    "move2": ["Earthquake"],
                    "move3": ["Stone Edge", "Rock Slide"],
                    "move4": ["Stealth Rock"],
                    "heldItem": ["Miracle Seed", "Grass Gem", "Soft Sand", "Ground Gem", "Muscle Band"],
                    "nature": ["Adamant"],
                    "evHP": 252,
                    "evAtk": 252,
                    "evSpDef": 4,
                    "lead": true // Prefer to send this Pokémon out first if possible.
                    // If two or more "leads" are selected, randomly lead with one of those.
                }
            ]
        },
        {
            "name": "Exeggutor",
            "minLevel": 35,
            "sets": [
                {
                    "move1": ["Leaf Storm"],
                    "move2": ["Psychic", "Psyshock"],
                    "move3": ["Hidden Power Fire", "Hidden Power Ice", "Sleep Powder", "Giga Drain"], // Pick 2, but don't duplicate Hidden Power.
                    "move4": ["Hidden Power Fire", "Hidden Power Ice", "Sleep Powder", "Giga Drain"],
                    "heldItem": ["Choice Specs", "Life Orb", "Grass Gem", "White Herb"],
                    "nature": ["Chlorophyll"],
                    "evSpAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252
                },
                {
                    "move1": ["Leaf Storm"],
                    "move2": ["Psychic", "Psyshock"],
                    "move3": ["Sleep Powder", "Giga Drain"],
                    "move4": ["Trick Room"],
                    "heldItem": ["Sitrus Berry"],
                    "nature": ["Harvest"],
                    "evHP": 252,
                    "evSpAtk": 252,
                    "evSpDef": 4,
                    "ivSpeed": 0 // Set IV if it shouldn't be 31.
                }
            ]
        },

        // Note: Non-Grass types are used here for some edge cases that aren't found in Grass types.
        {
      "name": "Wobbuffet",
      "rarity": 0.7,
            // No min or max level; can appear at any level.
            "sets": [
                {
                    "move1": ["Counter"],
                    "move2": ["Mirror Coat"],
                    "move3": ["Destiny Bond", "Encore"],
                    "move4": ["Charm", "Safeguard", "Destiny Bond", "Encore"],
                    "ability": ["Shadow Tag"],
                    "heldItem": ["Leftovers", "Custap Berry"],
                    "nature": ["Bold", "Calm"],
                    "evHP": 4,
                    "evDef": 252,
                    "evSpDef": 252
                }
            ]
        },
        {
            // All Unown forms are the same in-battle, so no need to define form here; choose it randomly.
            // Will need to define form when something like Wormadam is added.
            "name": "Unown",
            "maxLevel": 40,
            "sets": [
                {
                    // Only can have one move, so no other moveslots are present.
                    "move1": ["Hidden Power Psychic", "Hidden Power Ice", "Hidden Power Fire"],
                    "heldItem": ["Choice Specs", "Choice Scarf", "Focus Sash"],
                    "nature": ["Modest", "Timid"],
                    "evSpAtk": 252,
                    "evSpDef": 4,
                    "evSpeed": 252
                }
            ]
        }
    ]
}