My pets are characters of my favorite characters from Marvel and I use them both as spotlight and battle pets but Clint is also my gourmand pet.
Either stabbed or Nurien are going to become my battle pet, I have just started training Nurien but I think Stabbed has a good name for a battle pet xD
Companion is my fandom pet, she doesn't really have much purpose besides that. Harrts and Aejious are based on OCs, and once I stop being lazy I'll show off some writing about them. I have their stories in mind, but I never have really written them out.All of my pets are characters so that's their primary purpose. Aside from that, Tarnish is my battle pet and gourmand pet. I use battle pet lightly since I hardly do any battling, I just train her for the heck of it. Highness is my ex gourmand pet, she's eaten over 3k foods, but I figured it would make more sense for my battler to be a gourmand too.
Yes my character felicity is going to be my battle pet, I am going to use akahitoha just to zap, and oceiros the consumed king is my baby based off of my favourite ds3 boss so im going to have a story for him and a profile etc
It used to be they didn't at all, just characters on the site, but now I've got 1 who is also a battle pet and gets to read all books, 1 who is a gourmand pet, and many of the others are going to start keeping some of my collections now that I'm displacing my hoard. I'm actually holding myself back from making them all hold my hoard stuff... too expensive and I want them to have nice characters still, not all be hoarders like me :P
Most of my pets are characters or personal references. However, Yofune Nushi is books and battle, while Salamando is also battle (although neither are very high stats) and Maja Maolain is for being my gourmet, everyone else are for being pretty and cool and neat characters. ;3
All of them are either OCs or fan pets and thus, Treasure Chest pets. Mr.Stark is also the battle pet and Alicia the Gourmand pet.
So yes.
Frappe is my everything pet. XD She was my first pet and the only pet I've had since the beginning, so she gets all the food, all the books, and does the battling.
My Keetos are being worked on. I've developed personalities for them... they're like little bits of me. They also get food and read books based on their personalities.
Most of my pets are my original characters, even those adopted via the adoption center get some kind of love, eventually lol
Apart from that: Zay has been trained a bit so I can use the Melaria's Clawed Glove to make my other pets hungry faster, particularly my gourmand. Trippers is the main battler, gourmand, and book reader though.

Tbh Pinions does everything while the rest of them sit around and look pretty. While all of my other pets rotate in and out, I've always had Pinions, so I figured I'd just load everything onto them so I didn't have to worry about it.
Kishna is used to read all the books. Tamamo-no-Mae is my battle / gourmand pet.
Everyone else doesn't serve any purpose.
One is my battle pet and all, including my battle pet, are roleplay characters that would have opening stories if I would quit sitting on my keyboard and write them.
I am everyone of my pets. View them and you will see.
The Sands of Turns: Home
Driln is my battle pet, so he helps me get all the battle related achievements.
Driln also helps with the reading achievements. I read him books for the intelligence stat and AP. But I also read to Nageki Fujishiro. He's the library-bound mourning dove from Hatoful Boyfriend, so I want him to have a lot of books read too, even if I don't need him for the achievement.
Fairground Pest is my gourmand. "Do not feed them." HAHA STOP ME. c:
My pets are all meant for profile, story, treasure chest, all that stuff! All of them are either fanpets or original characters in pet form.
As for "purpose", Flandre Scarlet is my main battle pet while my main book pet is Patchouli Knowledge. I don't really feed pets rather than putting them in the resort, but I like to feed stuff to Riine since they'll eat just about anything and seem like a good candidate for that forum title. :')
I train a lot of my pets besides Flandre, too, because it fits them to have those stats. One of my main examples of this is Genocidal, who I intend to have very specific stats as to reference something in their source material. (I wish it was easier to hit 99 HP, 99 Attack and 99 Defense at level 20!)
Most of my pets are characters with the subsequent profiles, treasures, stories attached to said characters. I've also got a few fan pets but they're all historical or artist fan pets.
However, Huo and Bibliothecaire are my achievement pets though.
Huo is my battle pet and Bibliothecaire is the one I usually chuck books and food at for the gourmand and books read achievements.
Of all my pets, only a couple have a true, Subeta specific purpose. Namenlos is always my active pet. He is my primary battler/reader/foodie pet. I do try to spread out a little training to everyone, but no one else gets the attention he does in those regards. Frivolity is built around my love of green things and desire to display them. His entire being was built around a TC that grows in spurts and I have an entire gallery of items to add someday.
Everyone else is mainly just there to look pretty. Most have basic sketches of stories or characters in my head, but aren't actively worked on because I am lazy.
All of my pets (so far) are meant to be unique characters. I'm just too lazy to write their stories at this point. I have them eat different foods and read different books based on their characters. Besides that, Fabella is my reader/battler, Ezara is my secondary battler, and Amakiir is my glutton.
[Tree=Ickle] ❤ ~ * Can Bite For * ~ Angler, Blistered Hearts, Bubble Jelly, Caterkiller, Crack Head, Cryomorph, Doom Bloom, Fevermore, Love Sucks, The Vapors, Virus, Yggdrakill [Kiss=Ickle] + [Flower=Ickle] + [Dance=Ickle] [Egg=Ickle] + [TOT=Ickle] + [TP=Ickle]
I my original pets are created/adopted to be some kind of a weird sit-com family.
Fire Fihgter is my best battle pet yet. The big brother who is tolerating everything deadpan.
Rexicalo, the one who does the cleaning and cooking. Smart, but doesn't have chance to do anything.
Magic Horn will create scrolls and be a nerdy, cute book worm. She is secretly trying to summon a demon. Book achievement.
Windy Wisper is the sassy girls who will remind me to do my works and bosses everyone around. Spoiled girl, biggest, most expensive treasure.
Night Fang is there to be the comdic butt monkey, but he is too weird to realize the universe is abusing him for laugh. Also food achievement.
[IMG]https://img.pokemondb.net/sprites/black-white/anim/normal/staraptor-f.gif[/IMG][flower=EagleWing]