1. Marina from Splatoon 2
Description: Marina trying out a new drink that seems to expand her bust to a tremendous size.
In short: expansion (potion) Type: breasts
2. Booette from Mario series
Description: Booette is dancing along to the pac man ghost dance and 1 or 2 boos go to prank her. They/it attach a pump in her mouth/butt and inflates her breasts and butt. After a bit she will start becoming transparent and then popping. Ending with her sitting on the ground and covering her face in embarrassment.
In short: inflation with pump (air) Type: breasts and butt
3. Kouhai chan from Tawawa on Monday
Description: kouhai chan is walking through the street of Tokyo. When she noticed a bowl of blueberry labeled "free sample take one" she decided to eat one. she loved the taste of the blueberry. She decided to eat all the blueberry from the bowl. What she doesn't realize is that, there is a fine print saying "warning no more than 4 blueberry or else face the consequences.”She starts to turn blue. Her whole body starts to inflate. Eventually, her clothes bursts off and she keeps growing bigger. Some of the blueberry juice gushes out of her mouth. Kouhai chan gets really big and eventually stops growing. In the end, she just sits there kinda swaying back and forth. Feeling the pleasure.
In short: In short: self-expansion (blueberry) Type: full body, round
4. 2B from Nier: Automata
Description: The basic idea here is 2B downloads an old, corrupted file that gives her a virus and makes her inflate larger than the universe. 2B and 9S are searching through a list of forgotten data-banks/servers when 2B notices an odd name in a certain file, curiously thinking "what the hell is an .mp3??" and proceeds to foolishly download it without getting 9S to scan it first. The mp3 file in question is a remix of the popular "Pump up the Jam" song, but its coding would be so corrupted that the file causes conflicts in 2B's own safety measures and leaves her vulnerable to an attack from a piggybacking virus that was secretly attached to the mp3. 2B begins thinking differently when the archaic file opens, becoming fixated on 9S while the music starts to play in a broken and fragmented way because the software is so ancient and worn out. Meanwhile warnings about a virus breach keep popping up while her body inflates in large surges, in unison with every bass-y beat. 9S would be stunned in fear as his partner blows up and emits the music, while 2B wouldn't be able to resist inflating more, her logic and processing algorithms being gradually overwritten by the viscous virus, so pervasive because it's completely out of date and her systems can't handle how old it is. She becomes more infatuated with 9S, to the point of being fixated on him alone while she floods the room they're in with her spherical mass. 9S flees for the stairwell to the roof, but 2B quickly catches up by bursting through several stories and when he reaches the rooftop, she replaces it from underneath him by dramatically inflating up through the building and destroying it, tearing her shirt off in the process too. This excessive expansion continues on as 2B's spherical body engulfs more of the ruined city around them while 9S rides her rising frame close to her huge head, and several moments pass as the size scale rapidly accelerates. 2B outgrows the planet, bumps the Bunker and moon away, and the music finally fades out but she doesn't stop. Eventually 2B surpasses the entire universe, finally leaving her alone with the object of her desire, staring down ominously at 9S, *still* inflating.
Minor role: 9S
In short: self-expansion Type: full body, round
5. Nia from Xenoblade Chronicles 2
Description: While wandering around an open field, Nia finds a Core Crystal. After picking it up, she tries to awaken it, but the crystal is broken and the awakening goes wrong, causing the core to explode and blows Nia onto the ground. She tries to get up, but she feels surprisingly heavier and realizes what's happening: the wind power from the Core Crytal is now stuck inside her, causing her to inflate spherically. She blows up slowly first, up until her belt breaks when she becomes wider then she was tall. She then starts to blow up eve further, causing her to slowly float from the ground. At around building size, her head and limbs start to sink into her spherical body as well as she grows even further. As she grows ever further, her head is shown being overtaken by her neck as she truly becomes spherical.
In short: self-inflation with magic (air) Type: full body, round
6. Suika Ibuki from Touhou
Description: Marisa Kirisame is fighting against Suika like in the fighting games. Suika uses her power/spellcard to grow giant and swallows Marisa whole then takes a swig from her gourd in victory. Marisa, now in Suika's belly and drenched in alcohol, pulls out a potion and pours it out. Suika starts expanding outward evenly into a full round sphere with emphasized butt and breasts proportionate to her giant height. She burps bubbles of alcohol while inflating and Marisa floats out in one of them. Suika then expands rapidly and pops. Marisa flashes a V.
Minor role: Marisa
In short: self-inflation (bubbles) Type: giantess/vore, parts -> full body
7. Nico Robin from One Piece
Description: Nami and Robin are on a beach of an island. Robin is distracted looking around, while Nami assembles her Climatact, bubbles generating out of the tip. Nami gets a mischievous look and calls for Robin, who turns around and suddenly gets the Climatact shoved in her mouth. The bubbles go in her, making her inflate in short intervals, basically one pump per bubble. Robin doesn't even try to fight back and just lets herself swell up super huge, looking pretty complacent, with Nami keeping the Climatact in place, having climbed on Robin when needed as she inflated. Nami eventually finds this suspicious, her devious face turning to concern. From behind Nami, Robin sprouts a clone of herself from the ground, equally as inflated. (Anything that happens to any Robin, the original or clone, happens to all other Robins.) Her clone bumps into her original's body, the tremor making Nami slip off and get caught between the two of them, her legs trapped in their cleavages. She tries to escape, but her hands keep slipping off Robin's bodies, unable to climb out. She sighs and gives up, and looks up at the original Robin in front of her, who drops the Climatact from her mouth, stopping the inflation. The Robins smile, and Nami nervously smiles back as well. By the end, Robin would be about as big as Nami was from her video, with a round body and rather big and round breasts. * If a second Robin seems difficult, then instead Robin wobbles her body, causing Nami to slip into her cleavage and getting caught in there.
Minor role: Nami
In short: inflation with pump (air) Type: full body, more round
8. Marron from Dragon Ball Z (adult)
Description: Adult marron Krillins old girlfriend who finds a capsule somewhere in town where she clicks on it and out comes a turbo water pumping machine as she looks it over she sees a button on the side of it and as curiosity gets the best of her she presses it and the machine comes to life as the hoses suddenly go wild flailing all over the place spraying water and one of the hoses end up in her mouth and she begins to blow up rapidly filling up with water she does her best to take it out but to no avail as within moments she is already the shape of a ball and soon enough the other hose that was also flailing around end up getting stuck in her butt pumping her up even more as she gets bigger and bigger and bigger and bigger until she ends up overshadowing the people of the city as they run and flee in terror and finally the pump runs out of water and she is now bigger than north city
In short: inflation with hoses (water) Type: full body, round
9. Felicia from Darkstalkers
Description: Felicia is relaxing under the shade of a tree and doesn't notice Lilith flying overhead. The succubus decides to play a trick on the unsuspecting catgirl and swoops down and produces an air tank. Lilith then puts a hose into the exposed sleeping catgirl, who is somehow not awakened, and turns on the air. After inflating to a wide hourglass shape Felicia awakens to her new size and sees Lilith happily waving at her as a sly smile crosses her face. Lilith then fully opens the valve as Felicia's belly joins the mix and then the rest of her body. Once the tank is empty, and the catgirl is larger than the tree she was under, Lilith flies to the top of Felicia's new round form and begins to rest much to Felicia's annoyance.
Minor role: Lilith
In short: inflation with hose (air) Type: breasts + butt -> +belly + full body