As in the original Gen 1 Pokémon games (Pokémon Red, Blue, Green, and Yellow), you can catch several legendary Pokémon in the Pokémon: Let’s Go! games. Although Meltan, Melmetal, and Mew are new to a wholly Kanto game, you can pick up some old favorites: the legendary birds Articuno, Zapdos, and Moltres, and the man-made Mewtwo. So, what are you waiting for!?
We may as well get Mew out of the way: there’s no truck to use Strength on in this game, or whatever the heck you were supposed to do to get Mew in the old games. Mew comes preloaded in the Pokéball Plus controller. If you didn’t want to shell out for the controller, you may have to rely on a good friend to temporarily trade you Mew for your Pokédex, or a transfer from your Pokémon Go collection.
Meltan and Melmetal
We have already discussed how to get Meltan and its evolved form, Melmetal, in the Let’s Go! games elsewhere. You need an active Pokémon Go account before you even consider getting these two.
Articuno can be found in the Seafoam Islands as soon as your partner has learned Sea Skim (surf). The inside of the Seafoam Islands are a maze, but there are plenty of strong Pokémon and items to pick up. Just remember to use Strong Push (strength) to push those rectangular columns into the holes in the ground whenever possible. It is absolutely necessary to do if you want to meet Articuno!
Deep in the island, Articuno waits, and you need only to interact with it to trigger the battle. All of the legendaries have encounter battles, so it’s in your best interest to stock up on electric-, rock-, and fire-type Pokémon for this one. Oh, and stock up on ultra and great balls, unless you’re raring to use up your only Master Ball!
Zapdos can be found at the abandoned power plant off of Route 10, and you’ll need Sea Skim (surf) to get to it. This area is much easier to navigate than the Seafoam Islands. However, there are other encounter battles with Electrodes that can be triggered, so you may want to stock up on extra healing items and Pokéballs to get everybody in one fell swoop.
As with Articuno, you need only to interact with Zapdos to trigger the initial encounter battle. Rock moves are your best bet, as electric-type moves–the greatest weakness of flying Pokémon–and ground-type moves–the greatest weakness of electric Pokémon–will have little to no effect on Zapdos.
Moltres can be found in Victory Road, so he is the last of the birds one can obtain. Keep an eye out for Officer Jenny when you’re in the caves. Not only will she heal you as many times as you need, but she is also the sign that you’re approaching Moltres’ lair, deep in the winding cave.
Once the encounter battle has been triggered, you’ll want to bring out your strong water types. Electric moves are moderately successful–Moltres’ half-fire typing dulls the moves somewhat–so it may be best to use moves that can trigger paralysis. Rock-type moves will also work, but ground-type moves won’t do anything at all to Moltres.
Unlike all of the other legendary and mythical Pokémon in this game, you cannot obtain Mewtwo until you have defeated the Pokémon League. If you head back to Cerulean City, you will find that you will now be able to enter the mysterious cave on the outskirts of town (accessible by Sea Skim [surf]).
Traveling deep inside will award you with many strong Pokémon to catch for your Pokédex and EXP (if you can afford the ultra balls!), as well as many items just lying about. In the deepest, darkest part of the cave awaits the man-made Pokémon, Mewtwo.
Be warned: while the birds are all level 50-60, Mewtwo is level 70, and he’s no joke. Psychic Pokémon are weak to dark, ghost, and bug moves. It would also be in your best interest to try paralyzing, poisoning, or putting Mewtwo to sleep! Don’t forget to stock up on potions before taking this legendary monster on.
How are you doing on your quest to complete your Pokédex? Remember, Pokémon can be transferred from Pokémon Go, so don’t give up hope!