Alpha Pokemon are a new type of Pokemon introduced in Pokemon Legends: Arceus. While it's currently unknown whether Alpha Pokemon will make an appearance in the mainline games, these Pokemon are a great asset to any trainer's party in their Hisui journey.
More Alpha Pokemon will start spawning once the Noble Pokemon of their respective region are calmed. Aside from their large size, Alpha Pokemon will have three out of five of their Stats at level 3 upon capture and are usually a much higher level than other Pokemon in the area.
Pokemon Legends: Arceus — Where to Find Alpha Sinnoh Starters
Like most Pokemon games, most of the Legendary Pokemon in Pokemon Legends: Arceus can't be caught until the postgame. However, players can find Pseudo-legendaries Hisuian Goodra and Garchomp roaming Hisui if they want to add a powerful Pokemon to their team. Whether players obtain Goodra or Garchomp, both of these Dragon-type Pokemon will be useful in the latter half of Legends: Arceus.
Trainers can get Sliggoo as soon as they get the Ride Basculegion. An Alpha Sliggoo will be on a little island to the right of the Holm of Trials in the Crimson Mirelands. Players can also catch Goomy here as well.
Unfortunately, Sliggoo's spawn location requires trainers to cross a river. It may be possible to use Wyrdeer and get a running-leap into the Holm of Trials, but it's safer to get the Ride Basculegion instead.
Since Sliggoo is resting on a hill, it can easily spot trainers trying to sneak up on it, making it difficult to use the Back Strike technique. Disturbing Sliggoo will also make the Goomy aggressive and they'll start attacking.
The best way to catch Alpha Sliggoo is to try and stun it with Mud Balls. Stunning Alpha Pokemon with projectiles can
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