Once Upon A Katamari All Cousins: Complete Collectible Guide (68 Cousins)

Every Katamari fan knows the feeling: the city is rolled, the score screen is glowing, but the roster page still shows empty slots. Hunting down Once Upon A Katamari all cousins is the biggest completion task in the game, and it's the one that quietly gates two late-game levels behind it. If you care about the platinum trophy or full achievement list, this is not optional content.

This guide explains how many cousins exist, how the game doles them out across stages, and the habits that make collecting Once Upon A Katamari all cousins far less tedious. No guesswork and no wasted runs — just a clear path from your first cousin to your final roster slot.

What Counts as a Cousin in Once Upon A Katamari

Cousins are the extended family of the Prince: same rolling job, wildly different silhouettes. In previous Katamari titles they were unlockable playable characters. In this entry, they double as collectibles scattered through stages, which means you'll find them while you're already rolling, not on a separate menu screen.

Each one behaves like a normal rollable object until you touch it, at which point it joins your collection and gets added to the family roster. Because they're small and often tucked near landmarks, walls, or set dressing, they're easy to roll straight past on a first playthrough.

If you want the publisher's own overview of the game before you start hunting, the official Bandai Namco Once Upon A Katamari page is a solid starting point for platform and feature details.

A few things worth knowing up front:

• Cousins count toward the same completion percentage as Crowns and Presents.
• Some cousins only appear after you've met a specific stage condition.
• A handful are tied to late-game areas, so early 100% runs are impossible by design.

The Full Collectible Breakdown

According to the widely referenced collectible guide published by PowerPyx, Once Upon A Katamari contains 248 total collectibles. Cousins make up a big chunk of that number, and they're the category most players finish last.

Walkthrough documentation on Neoseeker is blunt about why cousins matter: collecting all of them is what unlocks two levels later in the game, and it's necessary if you want every trophy or achievement. In other words, the cousin hunt isn't a side activity — it's a progression gate.

That has a practical consequence for how you play. Instead of treating cousins as a cleanup task after you've beaten the story, it's smarter to grab every one you spot on your first pass through a stage, then return only for the stragglers.

Cousin Roster: Names and Highlights

Community wikis maintain running lists of the family, and the roster is alphabetized for a reason — it's genuinely long. The Katamaripedia cousin category for this game shows entries starting with letters from A through D alone filling multiple lines, including names like Ace, Asura, Ban-Ban, Beyond, Cacta, Can-Can, Chamba, Charlie, Clay, Clip-Clop, Cosmi, Daisy, Dangle, Dipp, Drive, and Drooby.

The Fandom Katamari Wiki notes that this entry added 11 new cousins to the family. Community reports indicate these newcomers are tied to the Prince Ship's time-travel feature, so if a stage feels historically themed, there's a good chance a brand-new face is hiding in it.

One useful framing: the broader mainline series has around 70 playable cousins when you count everyone (68 excluding the Prince and the Young King), and spin-off entries push that total much higher. This game's 68 collectible cousins is a self-contained list, so don't assume a character you loved in an older title automatically shows up here.

How Multi-Cousin Stages Actually Work

This is the mechanic that trips up the most players. In stages that contain more than one cousin, you can't simply scoop up both in a single run. Player experience shared on the Katamari on the Web forums is consistent on this point: you must first clear the stage with the previous cousin rolled up before the next one becomes available.

In practice, that turns certain levels into repeat visits rather than one-and-done clears. The sequence below is the reliable way to handle them.

Two habits make this much smoother. First, always finish a stage you've collected a cousin in — bailing out early wastes the trigger. Second, screenshot or note the roster screen before you quit a session, so you know exactly which stage needs another visit.

It's also worth knowing that the size requirement of a stage can matter. If a cousin sits behind a large object or on a high ledge, you may need to hit a certain katamari diameter before you can reach that area at all. Rolling a bigger ball first, then doubling back, is often faster than trying to squeeze in at minimum size.

Tips, Rewards, and Completion Checklist

Efficiency here is mostly about routing. The table below collects the advice that saves the most time across a full cousin sweep.

As for what you actually get, the payoff is concrete. Completing the cousin set unlocks two additional levels, and because the achievement and trophy lists reference that completion, a full roster is effectively mandatory for anyone chasing 100%.

If you're working toward total completion, treat the cousin list as the spine of your run and let Crowns and Presents fill in around it. That ordering keeps you from hitting a wall at the end, when the only thing standing between you and full completion is a stage you've already cleared three times.

FAQ

How many cousins are in Once Upon A Katamari?

There are 68 collectible cousins, part of a 248-item collectible total that also includes 141 Crowns and 39 Presents. That 68 figure is specific to this game and shouldn't be confused with the larger playable roster across the whole Katamari series.

Do I really need Once Upon A Katamari all cousins for the platinum trophy?

Yes. Collecting the full cousin set unlocks two levels later in the game and is required for the related trophies and achievements. Skipping the hunt means leaving those unlocks and any completion-based rewards on the table.

Why won't the next cousin show up in a stage that has several?

Because the game gates them sequentially. In stages with multiple cousins, you have to clear the stage with the previous cousin already rolled up before the next one appears. Finish the run, then replay it.

Are the 11 new cousins harder to find than the returning ones?

Community reports suggest the newcomers are linked to the Prince Ship's time-travel mechanic, which usually means they sit in themed stages you visit later in the story. They're not necessarily harder — just later. Working through stages in story order keeps you from missing them entirely.