Back Alley Mr. Mime is one of the requests you'll have to complete in Pokémon Legends Arceus.
It comes fairly early on in the game, but can only be done if you've caught a Mr. Mime already and also completed Request 14: Berry Helpful.
It'll also be with Andra again, who thanks you for your Oran Berries, but has a new request regarding a Mr. Mime that is making mischief.
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How to complete Request 21 'Back Ally Mr. Mime' in Pokémon Legends Arceus
To unlock Request 21, you would have needed a Mr Mime caught, and have completed Request 14: Berry Helpful.
Once you've collected the quest from the blackboard in Professor Laventon's office, you'll need to actually go and find Andra.
He's just outside across the small bridge and to the right. Make sure to set this mission as your active one, as you'll be doing a little bit of running about town, and that makes this far easier. After thanking you again for your berry helpful earlier actions, he'll get to the meat of the matter.
As far as Andra is concerned, there's a Mr. Mime running around with bad intentions, and he wants you to catch it. You'll see the creature in-between the houses to start with, but you'll actually need to circle around the buildings to your right to get behind him for this part of the quest.
Once you've done this, you'll have to follow Andra and the menacing mime again. Head to the new waypoint to the right of the Galaxy building and talk to Andra. Despite the Mr. Mime looking close, it's actually covered the area in invisible walls.
So, you'll need to go around the other side of the building and behind it to get to the Pokémon. There's a little bit of wiggly walking to do here, but the key thing is to stay close-ish to the left-hand cliff once you're about halfway behind the building. You should then be able to walk straight up to it.
This is a video game though, and the rule of 3s is absolute, so you've got to catch the monster again. Head to Andra once more, and you'll see that you've cornered this beastly thing. This time around, there's not far to go, but you need a specific approach.
Line yourself up facing the Mr. Mime with the two trees to your right, walk diagonally towards the second tree passing the first tree on the left, and you should be able to zag back to the Mr. Mime with ease.
Our Pokémon Legends Arceus walkthrough will help you pick a starter Pokémon and win the Kleavor boss fight. You’re also tasked with filling the Hisui Pokédex by obtaining new evolutions like Kleavor by evolving Scyther, Wyrdeer by evolving Stantler, Sneasler by evolving Hisui Sneasel and Overquil by evolving Hisui Qwilfish. There’s a host of new evolution methods, including ones for the Eevee evolutions. Take the time to complete Requests too, such as The Sea’s Legend, Wurmple’s Evolved! and finding the Wisp locations. Don’t forget to track down every Unown location too.
Back Ally Mr. Mime reward
After once again capturing the menace, you'll discover that actually, Mr. Mime is kind of a bro to one of the guards, and regularly helps out guarding the village. He's simply vibing while creating all of his invisible barriers, and Andra ends up feeling a bit silly.
The good news though, is that this doesn't stop you from getting your reward. You'll be rewarded with two Aux Guards, which are items that you can use to improve the defensive stats of one of your Pokémon while in battle.
They're pretty useful if you're struggling against an Alpha, so there's no harm in keeping them on you.
Here's how to complete other requests in Arceus:
- Request 8 'Bothersome Bidoof'
- Request 10 'Wurple's Evolved'
- Request 16 'Strange Happenings at Midnight'
- Request 17 'To Bloom or Not to Bloom'
- Request 23 - 'Getting Ahold of New Wares'
- Request 41 'An Elegant Tail'
- Request 43 - 'More New Wares'
- Request 50 'Double the Tails, Double the Fun'
- Request 59 'Misdreavus the Hairstyle Muse'
- Request 61 'Even More New Wares'
- Request 66 'The Sea's Legend'
- Request 69 'Gone Astray... in the Highlands'
- Request 71 'New Wares Yet Again'