We read their Dex enteries.

The way these Dex enteries will work is that there will be some generic information, then the Dex entry each girl wrote for the Pokemon.

MAGMORTAR-467-THE CANNON POKEMON-HUMANOID-SUBCLASS: DIAPER-TYPE: FIRE

Physical Description: Underneath the massive diaper, Magmortar is a large, pink woman with thick long pink legs leading up to a large, very round, pink ass. Her tits are pretty flat, but still very large, and make big circles. Her face is always on fire, but she is still very pretty. Her arms are covered by giant cannons. Her diaper almost looks like an upside-down balloon, with her head being where the knot would go. The diaper is so large that it covers her entire body, quite an impressive feat for a being the size of Magmortar. On average, she is around 9 feet tall. With an empty diaper, she weighs around 210 pounds, however with a full diaper, she can weigh up to 650 pounds. That's over 400 pounds of shit!

Entries in order caught:

RECEIVED AS STARTER:

Misty's entry: "Magmortar is my worst nightmare as a Pokemon. It fills its diaper about an hour from the last time it was cleaned, and each cleaning takes over half an hour if I'm lucky. Not to mention that whenever her diaper is over half full, she gets extremely agitated, sometimes shoving me inside of her diaper or blasting me with waves of shit. However, she never allows me to clean her until she is completely full, meaning I have to deal with half an hour's worth of hell every time she gets changed, making sleep impossible. Not to mention if I don't start to change her within 60 seconds of her diaper being full, She literally starts making poop explosions, sending fiery shits splattering everywhere, no matter where we are. And don't even get me started on how torturous the cleaning itself is. It is tons upon tons of literal shit! Magmortar also has a few nasty habits. For starters, its favorite activity is burning all of my clothes off, making me sweat and rub my body all over other trainers, before covering us in heaps of shit, forcing me to have a shitty makeout. Its so bad. Not only that, but she loves to use my face as a butt scratcher, which is really bad with a butt like her's. Sometimes, she will throw me on the floor and rub the outer side of her diaper on me, forcing me to feel (and smell) the poop before I actually have to clean it. She also never listens to what I say, meaning I have to basically drag her around everywhere I go. In other words, the worst possible Pokemon to have, especially as a starter."

Mallow's entry: "Magmortar is a horrid demon facading as a Pokemon. I'm sure Misty probably wrote an essay about just how bad she is, but let me tell you something that she probably didn't. As a Pokemon chef, Magmortar's shit is the worst thing I've ever tasted. And believe me, I've tried some bad stuff. Like that time Ash made me try his friend's "B-rocky mountain Cloysters" without telling me they were Tauros testicles instead of actual Cloyseters. Not only is it hot, it also has a soft texture to it that makes me puke, meaning that now to clean her diaper I also have to eat my own vomit. Great. If you're wondering why I know the taste so well, it's because I have to spend what feels like every second of my miserable fucking life taking care of her."

EVOLVED RIGHT AFTER 7TH GYM IN BLUE, MAGMAR CAUGHT IN POKEMON MANSION IN BLUE:

Clair's Entry: "Of all the Pokemon I've encountered so far, this is bottom 5. Maybe lower. All of the diaper Pokemon are just the worse to take care of, and Magmortar is no different. She loves to use her fire powers to make me all naked and sweaty, and then I'm magically compelled to start rubbing up against other girls. It's so horrible! And even then, she still goes and shoots her poop all over me, meaning now I'm covered in shit and still making out with hot girls. Truly the worst. I didn't even mention the cleaning. Trust me, you don't want to know. I would rather throw myself into Wela Volcano then try to take care of this Pokemon for one more hour."

Marnie's entry: "Magmortar is a Pokemon that figures out exactly what it's trainer hates, and then does that repeatedly. For me, that's using its fire to burn off my clothes and show my itty bitty titties (Marnie had been cursed by Sabrina's Alakazam to say that she had itty bitty titties once every few sentences) to the entire world, not to mention making me all sweaty. And I even have to make out with other girls! This is such fucking bullshit. Speaking of shit, her shit is soooo awful. It's almost unbearable. And she's just so massive! Especially her big round titties, which are the opposite of my itty bitty titties. Another bad thing is that where she stops to make me clean her diaper always seems to be in crowded public places, where everybody can stare at my itty bitty titties."

EVOLVED RIGHT AFTER 4TH GYM LEADER IN GOLD, MAGMAR CAUGHT IN BURNED TOWER IN GOLD:

Skyla's entry: "When I first got transported to this new world, I was scared, but kind of excited. Pokemon like Magmortar make me feel neither of those things. Instead, I feel embarrassed, disgusted, annoyed, humiliated, or flat out degraded. I'm supposed to be the Pokemon trainer here, but with Magmortar it feels like shes the one in charge. I need to be constantly cleaning her, scratching her butt with my face, letting her burn all my clothes off and making me all sweaty and then feel magically compelled to.... act all lesbian and stuff. And then it sprays me with it's feces! It's just so gross! The poopis just so impossibly awful. It actually is giving me PTSD because of all of the shit. I mean she was filling up 300-400 pounds of shit! how am I supposed to clean that! With just my mouth! Just talking about it makes me shudder. No thank you."

Serena's Entry: "So, I was the last person to catch this Pokemon, meaning there probably isn't a lot that hasn't already been said. However, that's a good thing, because having to deal with Magmortar for even one more route would be ****. I tried to take good care of it, and appease it's agitation. You know what it does to me? Burns off all of my clothes in the middle of a crowded street! Then, that fire makes me all sweaty and then I feel like I need to rub my sweaty body all over other hot girls and then it covers me in shit! It's so embarrassing! I hate it more than anything. Changing it's diaper is a massive pain, especially when she makes you do it after burning all of your clothes off in a public place, and then you have to crawl around in her diaper while everyone points and stares and laughs. I hate it more than anything! I hate it more than Marnie's itty bitty titties! (Serena was cursed too)."