Octonauts GUP-A Review: The Flagship Vehicle Tested in Our Bathtub

Three months of bathtub testing. Approximately 400 torpedo firings, of which 397 were recoverable and 3 were not. Two paddling pool deployments. One incident involving the torpedo, a shampoo bottle, and a trajectory that was more accurate than intended. Fourteen rescue missions conducted in the living room using a sofa cushion as a reef. One formal dinner where the GUP-A appeared under the table and was quietly confiscated.

This is the test data for the Octonauts GUP-A vehicle with Captain Barnacles. The verdict, after all of the above: it is a good toy at a fair price, and it is the right first vehicle for any family deep into Octonauts. The one unavoidable issue is the torpedo, which we will address directly and at some length, because it is the kind of information that would have saved us three separate searches of the toy storage box.

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Octonauts GUP-A Vehicle with Captain Barnacles (opens in a new tab)

The flagship command submarine — the most recognisable Octonauts vehicle for floor and bath play.

The GUP-A is the Octonauts’ primary command vehicle in both the original BBC series and the Netflix reboot. Captain Barnacles pilots it. It appears in virtually every episode. In the show’s canon, it is the vehicle used for most standard rescue missions before a more specialised GUP is deployed. In toy terms, it is the logical first vehicle purchase — the most recognisable, the most episode-relevant, and the one your child will have the strongest existing attachment to before the toy arrives.

The character attachment is not a small thing. Children do not play with toys they do not recognise. The GUP-A arrives already loaded with narrative meaning from the show, which means your child can begin playing immediately — not building up to play, but playing from the moment they put Captain Barnacles in the seat and press the torpedo button.

Build Quality and Design Accuracy

The GUP-A is built from solid ABS plastic in the main hull and thicker-walled components at the structural joins. After three months of daily use — floor, carpet, bath, paddling pool, sofa-height drops — the hull has no cracks. The porthole covers have held without separating. The Captain Barnacles figure has survived full submersion approximately 200 times and multiple accidental launches out of the vehicle when the torpedo mechanism fired with him still at the controls.

The design accuracy relative to the show is good. The shape, colour, and porthole placement are correct. Captain Barnacles fits inside the vehicle with his arms in a plausible piloting position rather than jammed in sideways. This matters because children who know the show check these things. A GUP-A where Captain Barnacles cannot sit correctly is a GUP-A that produces disappointment, which produces disengagement.

The Torpedo: A Survival Guide

The torpedo is the main play feature. It is also the toy’s main vulnerability.

The torpedo fires from a spring-loaded launcher on the front of the vehicle. Children aged 3 to 6 can operate this independently — the button requires enough force to prevent accidental deployment but not so much that small hands cannot press it deliberately. The firing distance is approximately 50 centimetres at full spring tension, which is satisfying without being hazardous. Our son found the mechanism deeply interesting for the first two weeks, firing it approximately 30 times per bath session before settling into a more sustainable 10-15 per session.

The spring mechanism operates correctly for approximately 400-500 firings before the tension begins to weaken. After this, the torpedo still fires but with reduced range. This is reasonable degradation for a toy at this price point — a six-month daily-use product that still functions is a good result.

The torpedo itself is a small orange plastic cylinder approximately 3 centimetres long. It is the correct size for the mechanism and the correct size to be launched across a bathtub and lost behind a shampoo bottle. We have not seen our original torpedo since day 11. The vehicle continues to function because we found a torpedo from a different vehicle set, which fits by fortunate coincidence.

Practical recommendation: before deploying the GUP-A for the first time, photograph the torpedo so you know what you are looking for when you inevitably need to find it.

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Octonauts Octopod Deluxe Playset (opens in a new tab)

The natural upgrade after the GUP-A — the full crew base with GUP docking capability.

Bath Play Versus Floor Play

The GUP-A works equally well on both surfaces.

For bath play: the hull design keeps the vehicle upright at standard bath depth. Captain Barnacles does not fall out when the vehicle is at normal floating angle. The vehicle can be pushed below the surface by children who are curious about submarines doing submarine things, and it returns to the surface correctly. The porthole covers seal well enough that water does not flood the interior during standard play.

One note: the torpedo mechanism is spring-steel. Repeated underwater firing — pressing the torpedo button while the vehicle is submerged — may accelerate spring tension loss. The mechanism is designed for surface firing. Bath deployment is fine; submersed torpedo combat is not recommended as a sustained activity.

For floor play: the GUP-A has small wheels on the underside that function on smooth floors and low-pile carpet. On thick carpet, grass, or uneven surfaces, movement is limited. This is a vehicle designed for water — floor play is a secondary use case. The wheels are a useful feature for moving the vehicle between rescue locations in living-room missions; they are not the primary play mechanism.

The Character Figure

Captain Barnacles comes with a helmet that can be removed and reattached. This will be removed within approximately five minutes of unboxing. The helmet will then be: on the floor, under a piece of furniture, or in the bathtub. It is a small separate piece and it will find its own path. The figure works correctly with and without the helmet — in the show, Barnacles usually wears it, but the figure without the helmet is still identifiable and still fits in the seat.

The figure itself is well-made for its scale. The articulation is limited — arms move, legs do not — which is appropriate for a figure this size and for children at the target age. The paint application is accurate. After three months of regular use, the paint has held on the areas that matter (face, logo) with minor wear on contact points.

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Octonauts 8 Character Figure Set (opens in a new tab)

Complete the crew — all eight main characters to deploy alongside the GUP-A.

Original Range vs Above & Beyond Version

There are two main eras of GUP-A toys. The original Mattel design matches the BBC series (2010–2020). The updated version from the Above & Beyond range matches the Netflix reboot. The core play mechanics are the same; the visual design differs, primarily in colour saturation and some shape details.

For families watching the Netflix reboot, the updated version is more accurate. For families watching the original BBC series, the Mattel design matches better. Both are good toys — the version choice is primarily about which show your child knows.

The updated range has slightly improved plastic quality at the structural joins and a cleaner colour palette, based on comparison of the two versions we have handled. The difference is not dramatic but it is present.

Is the Octonauts GUP-A suitable for bath play?

Yes. The GUP-A is designed for water play — it floats correctly and the figure fits securely inside. Avoid repeated underwater firing of the torpedo mechanism as extended submersion may affect the spring tension over time.

What age is the Octonauts GUP-A for?

The GUP-A is rated for ages 3 and up. The torpedo mechanism fires small projectiles that are not suitable for children under 3. For children aged 3 to 4, supervise torpedo-firing sessions.

Which version of the GUP-A should I buy?

If your child watches Octonauts Above and Beyond on Netflix, the updated version from the Above and Beyond range is more accurate. If they watch the original BBC series, the original Mattel design matches better. Both are good toys.

Does the GUP-A come with a figure?

Most GUP-A sets include a Captain Barnacles figure. Always buy the version that includes Captain Barnacles — some economy listings are sold without a figure and the vehicle without a crew member misses the whole point.