ALL RIGHT LEZ DEW THIIIIIIS
Parents: Vanilluxe + Cofagrigus
Shared egg group: Mineral
Offspring name: Vanillagrigus
New type: Ice/Ghost
New base stats: 74/82/125/112/110/64
New ability and desc: Snow Warning + Mummy = Crypt Dusting (Sets up Plague Weather for 5 turns. Plague damages Pokemon not of the Ghost and Ice types for 1/16 of their HP at the end of the turn. Turns Weather Ball into a Ghost-type move w/ double power. Blizzard has 100% accuracy in this Weather)
Notable moves: Shadow Ball/Hex/Weather Ball, Ice Beam/Freeze-Dry/Blizzard, Dark Pulse, Flash Cannon, Signal Beam, Energy Ball, Psychic, Knock Off, Iron Defense, Pain Split, Will-o-Wisp, Toxic Spikes, Nasty Plot, Autotomize, Light Screen, Role Play/Skill Swap, Heal Block, Trick Room.
Role identification: Set up Plague weather and go nuts. Nasty Plot + Blizzard = DEATH. Weather Ball in Plague hits hard, and Flash Cannon helps with Rock types, while Signal Beam helps alleviate Dark-type troubles. Or you can play support with moves like Light Screen, Toxic Spikes, Knock Off, Heal Block, Trick Room, and Will-o-Wisp. Unfortunately, Pain Split's your only means of recovery, and outside of Trick Room or using Autotomize, you're so sloooooooow. Plus you don't have a lot of HP to aid your bulk, but that does make Pain Split more effective.
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YOU WANNA GO, BRO!?
Parents: Meganium + Slowbro
Shared egg group: Monster
Offspring name: Megabro
New type: Grass/Water
New base stats: 97/88/115/101/100/65
New ability and desc: Overgrow + Own Tempo = Nature's Course (Both abilities combined)
Notable moves: Giga Drain, Scald/Surf, Psychic/Psyshock/Future Sight, Energy Ball/Leaf Storm, Ancient Power, Tri Attack, Flamethrower, Focus Blast, Ice Beam, Shadow Ball, Signal Beam, Thunder Wave, Slack Off, Iron Defense, Calm Mind, Worry Seed, Safeguard, Reflect, Light Screen, Leech Seed, Toxic, Yawn, Substitute, Trick Room, Magic Coat, Dragon Tail.
Role identification: With impressive bulk and a decent Sp. Atk stat, Megabro is a tank, especially with Calm Mind, Giga Drain, and Slack Off in its repertoire. It has surprising coverage in Flamethrower, and can hit hard with its Grass attacks if it's beaten down. Thanks to Trick Room, its middling Speed isn't always an issue. It really shines as a supporter, though, thanks to moves like Thunder Wave, Yawn, and Leech Seed. Worry Seed takes away abilities, one of the greatest assets these FE Pokemon have, and can deflect entry hazards and status moves with Magic Coat. Dragon Tail is a good way to take advantage of this, as it subjects your opponent to the very hazards they threw at you. But Megabro's ability is pretty lame, and it isn't nearly as powerful as a lot of other fusions.
Parents: Meganium + Mega Slowbro
Shared egg group: Monster
Offspring name: Mega Megabro
New type: Grass/Water
New base stats: 97/88/185/131/100/65
New ability and desc: Shell Armor
Notable moves: See above.
Role identification: Now we're talking! Better physical bulk and Sp. Atk make Mega Megabro a force to be feared. After a few Calm Minds, this thing is the epitome of FAT. But it still doesn't have a great ability...welp. Can't win 'em all.
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It's the Easter Bun-bot!
Parents: Azumarill + Registeel
Shared egg group: DNA
Offspring name: Regiazu
New type: Water/Steel
New base stats: 90/82(+20)/125(+10)/67/125(+10)/50
New ability and desc: Huge Power + Clear Body = Plexiglass (Both abilities combined)
Notable moves: Aqua Jet, Waterfall/Aqua Tail, Play Rough, Body Slam/Return, Ice Punch, Knock Off, Superpower/Brick Break/Hammer Arm, Earthquake/Bulldoze, Explosion, Rock Slide, Shadow Claw, Iron Head/Tail, Thunder Punch, Curse/Hone Claws, Rock Polish, Toxic, Thunder Wave, Stealth Rock, Safeguard, Belly Drum, Charm/Tickle, Encore, Block, Perish Song, Light Screen, Z-Splash, Whirlpool.
Role identification: The Pokemon with the highest Attack stat, Mega Mewtwo X, has a base Atk of 190, which amounts to a maximum stat of 526 with Nature, EVs, and IVs. Regiazu hits 578. AND IT GETS BELLY DRUM + AQUA JET. That's just scary, man. But if you wanna go from "Monster" to "Jerk", use Block/Whirlpool + Perish Song. And you can Encore them into a move that can't hurt you, so their death is pretty much guaranteed. Also, EXPLOSION. With a movepool like this, a crazy Attack stat, and great 90/125/125 bulk, you'd think Regiazu would be unstoppable...except it doesn't have recovery outside of Rest or Aqua Ring, and it's stupid slow. It doesn't even get Gyro Ball to take advantage of that! Well, there ARE two Trick Room setters above it, nudge nudge wink wink.
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Welp. Might as well add something USUM related.
Parents: Lycanroc-Dusk + Scrafty
Shared egg group: Field
Offspring name: Lycraftusk
New type: Rock/Fighting
New base stats: 75/108/95/55/95/89
New ability and desc: Tough Claws + Moxie = Brass Knuckles (Both abilities combined, but if Lycraftusk knocks out a Pokemon w/ a move boosted by Tough Claws, Attack is raised by 2)
Notable moves: Accelerock, Crunch/Foul Play, Stealth Rock, Roar, Rock Slide/Stone Edge, Bulk Up/Swords Dance/Dragon Dance, Return, Rock Polish, Fire/Thunder Fangs, Sucker Punch, Drill Run, Iron Head, Zen Headbutt, Outrage, High Jump Kick, Dragon Claw, Poison Jab, Knock Off, Drain Punch, Fire/Ice/Thunder Punches, Fake Out.
Role identification: Mediocre stats, but a great movepool! Plus, since almost all of Lycraftusk's attacks are contact moves, they get the Brass Knuckle boost, and guarantee a +2 attack boost if they knock something out. 3 options for boosting give you 3 different ways to plan a set, and Poison Jab/Iron Head deal with Fairy types nicely. Too bad Lycraftusk's kinda meh statwise, and has too few moveslots.
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Snake? Snake!? SNAAAAAAAAAAAAKE!
Parents: Serperior + Darmanitan
Shared egg group: Field
Offspring name: Serpentan
New type: Grass/Fire
New base stats: 100/117/85/62/85/114
New ability and desc: Contrary + Sheer Force = Make-Do (Attacks without additional effects are boosted by 30%, and stat changes inflicted on this Pokemon by the opponent are reversed)
Notable moves: Aqua Tail, Return, Dragon Tail, Leaf Blade, Outrage, Fire Punch/Fang, Earthquake, Brick Break, Knock Off, Rock Slide/Stone Edge, U-Turn, Zen Headbutt, Belly Drum/Coil/Swords Dance, Gastro Acid, Leech Seed, Synthesis, Toxic, Taunt, Torment, Yawn, Will-o-Wisp, Encore.
Role identification: Lemme define the difference between an additional effect and a move's properties real quick: Additional effects are things like chances to burn, flinch, boost your stats, or lower your opponent's stats. Even though moves like Flame Charge are guaranteed to raise a stat, their effects are negated by Sheer Force. A property, on the other hand, is something like a high critical hit ratio or Knock Off's innate item removal.
Now that that's over with, I'm sure you can understand what makes Serpentan so effective. STAB Leaf Blade with a Make-Do boost hits hard, especially if you use Coil, Swords Dance, or, God forbid, Belly Drum. Since you're the one inflicting these stat changes on yourself, they aren't reversed, so have fun with that. Return becomes a BP 132 blow, hitting most that don't resist it hard. And Serpentan's high speed certainly helps it get off strong attacks. Only real problem is, it doesn't get Fire-type attacks that can be boosted by Make-Do.
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I'll be honest; when I saw people using Zeraora in fusions, I thought CAP were being used in this slate. Didn't know it existed.
Parents: Zeraora + Electivire
Shared egg group: DNA
Offspring name: Zeractiv
New type: Electric
New base stats: 85(+4)/135(+18)/75(+4)/103(+5)/85(+3)/125(+6)
New ability and desc: Volt Absorb + Motor Drive = Energy Guzzler (Both abilities combined)
Notable moves: Plasma Fists, Fake Out, Close Combat/Drain Punch, Acrobatics, Fire/Ice Punch, Knock Off, Throat Chop, Body Slam/Return, Bulldoze/Earthquake, Quick Attack, Rock Slide, Volt Switch, Thunderbolt/Discharge/Electro Ball, Focus Blast, Grass Knot, Flamethrower, Psychic, Signal Beam, Bulk Up/Hone Claws/Calm Mind, Thunder Wave, Toxic, Ion Deluge.
Role identification: Zeractive has decent mixed capabilities and only 1 weakness, plus an ability that ruins opposing Electric-types' days. Or Normal types, if you use Plasma Fists or Ion Deluge. It has a variety of moves to cover a lot of bases, such as Ice Punch for Ground and Dragon types, Fire Punch for Grass types, and Earthquake to defeat opposing Electric types. That's only covering the physical spectrum, though; Zeractive has Special moves of several types, such as Flamethrower and Psychic. It's pretty frail, though, and unless you run a Special set, you're gonna run into Ground types with impressive physical bulk.
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And now, my first re-sub!
Parents: Giratina + Zweilous
Shared egg group: DNA
Offspring name: Giralous
New type: Ghost/Dark
New base stats: 115(+4)/110(+18)/96(+1)/82/96(+1)/90(+16)
New ability and desc: Pressure + Hustle = Stressed Out (Physical moves do 50% more damage, but use 2 PP)
Notable moves: Aqua Tail, Crunch, Body Slam/Return, Defog, Destiny Bond, Toxic, Dragon Claw/Tail/Rush, Earthquake, Fire/Ice/Thunder Fang, Head Smash/Stone Edge, Heal Block, Hone Claws, Iron Head/Tail, Pain Split, Shadow Sneak/Force/Claw, Superpower, Taunt, Torment, Zen Headbutt, Tailwind, Will-O-Wisp.
Role identification: Do I really need to say anything other than "tank"? Giralous has a ton of damage-dealing and, to a lesser extent, support options. Powerful moves such as Stone Edge/Head Smash and Crunch demolish anything in its way, and after a Hone Claws, you're pretty much unstoppable. Well, not really. Your only recovery move is Pain Split, and Fairy types can do a lot of damage to you. Not to mention Giralous eats up Power Points like they're cinnamon rolls at Cici's Pizza (#notsponsored). Still, it's a beast to behold.