Milo is the first Gym Leader GalarianTrainers face in their Gym Challenge. He is a farmer that honed his skills working on his farm with his Pokémon, and can be often seen in Turffield trying to wrangle wandering Wooloo with his farm's herding Yamper. Despite his size and strength, Milo is a gentle, laid-back Trainer who has trouble giving it his all on weaker opponents and doesn't worry about winning or losing so long as each party is having fun. Nessa considers Milo her rival, as revealed in her League Card, but Milo doesn't seem to acknowledge this, claiming the only rival he has is himself.
"This Trainer was born as the son of farmers. He has honed his strength, stamina, and skill as a Pokémon Trainer from a young age by working together with his Pokémon. Because of his gentle nature, he has trouble going all out on weaker opponents, which is why his Gym is the first one for challengers to attempt during the Gym Challenge. He always wears his boots, as apparently they let him dig in his heels when he needs to."
Rare League Card
"Though his record isn't the best due to his focus on simply having fun in battles, Milo himself is incredibly strong. The rolls of hay used in his Gym Challenge each weigh over 770 pounds, yet Milo can roll them around easily. Wooloo tend to roll around, too, and sometimes they can get carried away and roll out of the Gym Stadium. It has become common in Turffield to see the whole town chasing after Milo, who is in turn chasing after a stray Wooloo, along with Yamper."
"My... Are you OK? You took that Tackle head on..."
"Hmmm? Oh, you must be one of those Gym Challengers, right?"
"Yes, indeed!": "Ahhh, I thought so. I saw you at the opening ceremony."
"No, I’m not": "Oh please, are you trying to have me on? I saw you at the opening ceremony!"
"My name’s Milo. I’m a Gym Leader and rather partial to Grass-type Pokémon."
"I’ve been itching to see just how good the Champion-endorsed Gym Challengers are... Let me find out at the Gym Stadium! Just head on through this route, and you’ll run right into my stadium. See you there!"
"Come on now. Back to the stadium with you, too! We can’t keep the Gym Challengers waiting!"
"This’ll really leave you in shock and awe. It’s our Dynamax move!"
Upon being defeated
"The power of Grass has wilted... What an incredible Gym Challenger!"
After being defeated
"That must have been a fulfilling Pokémon battle for you!"
"As proof that you have defeated a Gym Leader for the Gym Challenge, allow me to present you with your very own Grass Badge!"
"You need to obtain all eight Gym Badges in order to complete the Gym Challenge. And the only way to gather the Badges is to defeat every Gym Leader!"
"Some advice for you, <player>. The Gym Challenge has a set order you’ll need to follow. So that means your next stop should be in Hulbury to meet Nessa. Hulbury’s just beyond Route 5. Or since you’re got the Grass Badge, you could head to the Wild Area. It’s a bit tricky to catch Pokémon that are a higher level than the Pokémon on your team, but they make powerful allies if you succeed!"
"What's going on here?" : "I was actually in the middle of an exhibition match with Piers. Then this Dynamax Pokémon came charging in."
"Much obliged, Hop! I'd expect nothing less from a Gym Challenger. I knew we could count on you."
"Hm. Those suspicious characters you saw are concerning... But for now, I think we should get this Dynamax Pokémon to settle down first! I'd be glad for your help against such a tough-looking opponent, Champion <player>."
"Of course!" : "All right. Then let's head to the pitch."
"Piers might look scary, but he's great at looking after others. He's a big brother, after all. All right, we should get going, too."
"Phew... Looks like things've finally calmed down a bit."
"I can see your dislike of Dynamaxing still hasn't changed, Piers. But there was definitely something off about that Dynamax transformation..."
"Quite right... Normally, a Pokémon needs to respond to a Dynamax Band in order to Dynamax, but..."
"Did you feel anything unusual, <player>?"
"I did" : "So you noticed something was off, too. There's no Trainer to be found. This really is a mystery wrapped in an enigma. I'll make sure Turffield Gym takes good care of this Pokémon for the time being. You lot really helped me out here. Thanks for that. Oh, and <player>! If you should ever need my help, feel free to call me anytime."
Milo briefly appeared in Buddy, where Hop's Wooloo landed on his farm after running away from its Trainer. He was alerted to its presence by his herd of Wooloo. Upon seeing its tag, Milo arranged for a Flying Taxi to come and take Hop's Wooloo home.