This trophy is for rolling up all the cousins in the game.
Cousins appear on every level. You can see which cousins you have at the level select screen.
You must successfully complete a level in order for rolled up cousins to count. It's easiest to do this on Eternal mode (which many levels have as an option).
I used this guide from Katamari on the Web to find the ones I missed through normal play:
https://katamariontheweb.jcink.net/index.php?showtopic=194*** Spoiler - click to reveal ***King
Gingerbread house
Honey
- Up on the hill where the stacks of food are.
Clean Up
L'amour
- Walking around on the floor.
Cows and Bears
Daisy
- Running around the race track with a bunch of bear and cow costumed men.
Money
Odeon
- At a table in the flea market area just as you enter.
Fireflies
Dipp
- At the top of the hill with a bunch of fireflies circling around him, same spot you would go to light the fire in the Campfire Stage.
Sumo
Nik
- On the stage near the farm.
Prince
- Sitting on the copy machine under the tent near the train tracks.
--Note: not sure if he counts here. The king's text box popped up when I rolled him up here. Maybe he's just a collection item here.
Shopping
Harvest
- Standing on a stack of fruit near the fruit aisle of the market in between the fruit stands on the wall and the fruit stands on the floor.
School
Huey
- In one of the classrooms.
Camp
Kinoko
- Dancing in a circle around a fire with some other people.
Limited to 50
Jungle
- On a fish swimming in the jungle area's mini pond.
Snowman
Sherman
- Lounging on a towel under an umbrella down the hill from where you start.
Hot Stuff
Lalala
- Outside and across the river, there will be a tiger on a flying carpet when you're close. There should be two bridges connecting an island and she is on top of some stacked items that raise and lower in the - ground and the small island.
Miso
- Inside the store at the beginning, close to the door to outside, against the back wall under a window.
Small Just-Right
Marcy
- On the robot's shoulder.
Medium Just-Right
Foomin
- In the last classroom (the one across from the bathroom) flying around.
Large Just-Right
Princess
- Running around in the city where you start the level.
Wake Up the King
Ace
- In the cosmos.
Havana
- Running around the amusement part area.
Macho
- Inside the football stadium near the Mayan temple past the 60m marker.
Lucha
- At the waterfall that makes the river, he is on a ledge.
Kenta
- Past the 3m marker, walking across a wooden bridge by the camping area.
Mag
- Sitting on the US after you reach 3km.
The King's Dream
June
- In a memory bubble.
Slip
- In a memory bubble.
Robo King
Tutorial
None
Make a Star 1 - Playtime
Dangle
- Near the table in the dining room is a sewing kit with a ruler sitting out near the edge of it with Bran standing on the end of it.
Make a Star 2 - Calories
Ichigo
- In the mouth of a pink venus flytrap which is on top of a big divider near the three round spinning platforms that are each on top of tall loaves of bread.
Hans
- In the small area that would lead to outside the store if you could exit it, he's very small and between some buckets on the right.
Make a Star 3 - Rich
Paula
- Near the pond outside.
Kuro
- Go up the ramp made of cards that's on the second shelf of the desk by the sofa and he's flying around a flower pot. If you come here when you're larger, you'll just roll up the cards.
Make a Star 4 - Constellations
Miki
- Standing on some surfboards in the harbor by the big sailboats.
Pokkle
- Standing on a cuckoo that pops out of the hedges next to the pool with cuckoo clocks on top.
Make a Star 5 - Underwater
Marny
- Riding a fish around under water.
Shy
- Sitting on the log raft floating on the surface.
Make a Star 6 - Animals
Beyond
- Up near the building on the hill where there are people looking out of telescopes.
Make a Star 7 - As Large As Possible
Johnson
- On the roof of the house.
Make a Star 8 - As Large As Possible
Velvet
- Inside the house where you start, on the very top of the daruma pieces.
Twinkle
- On the christmas tree near the 50 cm gate in the yard.
Make a Star 9 - Energy
Peso
- On a plane at the airport. It's not always there, so you might have to wait.
Shikao
- On a lily pad near the spinning man in the water by the sailboats.
Odeko
- On a green island with red petals around it.
Signolo
- In the city streets area after the 3m marker, usually by a line of cars. Kind of looks like he's directing traffic near the christmas tree.
Nai-Nai
- Sitting on a boat (looks like the Titanic) that is floating on an angle in the air. Gonna be about 250m when you get this one.
Make a Star 10 - As Large As Possible
Can-Can
- Chasing a truck with tv’s on it past the 1.5 marker.
Make a Star 11 - As Large As Possible
Nickel
- At the TV Store
Nutsuo
- Riding on the back of a Loch Ness monster in the water near the giant waterfall past the 12m barrier.
Ryu
- At the top of the wrestling rings after getting Nickel.
Norn
- Pops out of a mini oasis in the sand area beyond the 60m marker.
Make the Moon
Ban-Ban
- In the schoolyard.
Kyun
- Sitting under the tree near the lake.
Katamari Spinkler
Kunihiro
- Standing on top of the stone Nutsuo statue on the upper level near the tree. You need ot be fairly large to get him and by large, you need to have a fair amount of the sand turned into greenery.
Pu
- On a sand sculpture where the first unlockable oasis is. Roll straight from the start of the level and use the mini trees as a ledge and hop up to the ledge.
Make a Star - Race
Fujio
- Rolling a katamari around up near the house in the center.
Drive
- Racing around the track.
Make a Star - Danger
Opeo
- Being held by the octopus in the water near the ice section.
Drooby
- Sitting in the middle of a ring of clouds on a small island (not on one of the whales.
Farewell!
Colombo
- Sitting on a vacuum cleaner.
Mu
- There is a random item on the floor. Roll that up to make the next appear. Do that five times and then Mu will appear where on the floor. This is the order of items: mud statue, dandelion, wooden slipper, wooden pipe instrument, and then a shield. Try doing a lap around the robot if you can’t find Mu. He will appear and be rather small and is all black.