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Bandai SD BB Senshi RX-105 Xi Gundam

$24.00 AUD
The RX-105 Xi Gundam from Mobile Suit Gundam: Hathaway's Flash in snap-fit SD BB Senshi form. Moulded in colour, with opening shoulder and chest armour and a display stand. No glue or paint required.
From $10
4 × $6.00
Key features
  1. Opening armour: the shoulder and chest armour open and close, a rare gimmick at SD scale.
  2. Moulded-in colour, snap-fit: accurate straight off the runner, no glue or paint required.
  3. Posable, with a stand: double-jointed head and full waist rotation, and a display stand is included.
Returns & Refunds
  1. Australian Consumer Law Compliance: Mecha Express Australia strictly adheres to the Australian Consumer Law for all transactions.
  2. Contact Process for Issues: If you encounter any issues with your purchase, you should first contact Mecha Express Australia via email at support@gundamexpressaustralia.com.au, describing the problem and providing photos and contact details.
  3. Response and Advice: Mecha Express Australia will promptly respond to your email to discuss the issue and advise on the next steps.
  4. USA Customer Policy: USA customers are not eligible for returns, refunds, or compensation for any issues including lost, stolen, or incorrectly delivered items.
  5. Return Conditions for AU and NZ: Items must be returned in their original, undamaged, and resalable packaging if requested by Mecha Express Australia.
  6. Refund and Replacement Policy: Australian and New Zealand customers may receive replacements or refunds for reasons like change of mind (before dispatch with a restocking fee), incorrect items, lost/stolen/damaged parcels during delivery, missing parts, or inability to supply an item. Mecha Express Australia will give you a Reply Paid number for you to return these items at no cost to you at your local Australia Post outlet.
  7. Non-refundable Items: Items that cannot be refunded include those that are opened, used, partly assembled, lost parts, self-damaged items, or items found with no issues.
  8. Duplication Promise: Returns are accepted if you receive a duplicate gift, provided the item is returned in resalable condition and at your own expense.
  9. Pre-Order Cancellation: While pre-order refunds are typically not offered, requests will be considered but subject to a 10% restocking and administration fee.
  10. Restocking and Administration Charge: A 10% fee applies to canceled orders or refunds to cover non-refundable third-party fees, calculated on the total value of the products and shipping costs.
Series Assembly Guide FAQ

Bandai SD BB Senshi RX-105 Xi Gundam

Bandai SD BB Senshi RX-105 Xi Gundam. Hathaway's mobile suit, super-deformed.

The Xi Gundam in pocket form. The RX-105 Xi Gundam is Hathaway Noa's mobile suit from Mobile Suit Gundam: Hathaway's Flash, a heavy Universal Century machine built around a minovsky craft system and funnel missiles. This BB Senshi kit (No.386) shrinks it into a chunky, super-deformed build that snaps together in an afternoon and still carries the suit's bulk and presence.

Build difficulty

Beginner-friendly. BB Senshi is a snap-fit SD line moulded in colour, so there is no glue, no paint, and no nipper skill needed to get an accurate result. A pair of nippers tidies the parts as they come off the runner, but the kit is forgiving for a first build.

Technical highlights

For an SD kit, the Xi packs in real gimmicks. The shoulder and chest armour open and close, the head swivels on a double-sided ball joint, and the waist rotates a full 360 degrees, so you get more posing range than the stubby proportions suggest. A display stand is included to hold it up.

What makes this kit special

  • Opening armour: the shoulders and chest open and close, a neat touch rarely seen at SD scale.
  • Moulded-in colour, snap-fit: accurate straight off the runner, no paint required.
  • Posable for an SD: double-jointed head and full waist rotation.
  • Display stand included: the Xi stands proud without needing a separate base.

What's in the box

  • SD BB Senshi RX-105 Xi Gundam parts, moulded in colour
  • Display stand
  • Foil stickers and instruction sheet

Build your Universal Century collection

From the same film, both in stock at Mecha Express:

Build specifications

  • Series: Mobile Suit Gundam: Hathaway's Flash
  • Grade: SD BB Senshi (No.386)
  • Mobile suit: RX-105 Xi Gundam
  • Pilot: Hathaway Noa (Mafty Navue Erin)
  • Timeline: Universal Century
  • Manufacturer: Bandai Spirits
  • Assembly: Snap-fit, no glue or paint required

Perfect for

  • Hathaway's Flash fans who want the Xi without a big build.
  • First-time builders after a characterful SD with working gimmicks.
  • Anyone pairing it with a Penelope for the film's central rivalry.

Fast Australian shipping

Orders placed before 2pm AEST on a weekday ship the same day from Brisbane. Free shipping on orders over $199 within Australia. Subsidised shipping to New Zealand.

What to watch for

SD kits use stickers for some of the finer markings, so take your time seating them straight. The Xi is a stocky design and sits well on its own feet, but the included stand helps if you want a leaning or hovering pose. As with most SD kits, the smaller parts are easy to lose on a busy desk, so work over a tray.

Build notes

Nothing here needs glue or paint. If you want to sharpen the look, a dark Gundam Marker run into the armour seams adds depth in a few minutes.

Last updated: 26 June 2026 (AEST)

Bandai SD & Cross Silhouette Gundam

Let's talk about the amazing world of SD, BB, and Cross Silhouette Gunpla. Ever fancy building cute yet badass models? Super Deformed and BB Senshi Gunpla is where it's at. These kits are recognized for their exaggerated and cartoonish proportions.  They're a cinch to assemble, yet loaded with intricate details...

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Bandai SD & Cross Silhouette Gundam

Assembly Guide

Skill Level.2 Basic modeling skills are required. Parental supervision may be required for younger children. These kits are generally suitable for beginner builders. A basic set of modeling tools are required including nippers, hobby knife, sanding sticks/paper, file, and tweezers. No glue is needed for the general assembly. Parts will need to be removed by using a pair of nippers and cutting the part away from the runner. Parts may require clean-up where they were removed from the runner.

Gunpla (plastic model kits) are a snap together assembly and do not need plastic cement to complete. We always recommend having some plastic cement handy as a part of your modeler's tool kit. If you prefer to fix your model in a particular pose then plastic cement will work. Plastic cement is also perfect to use if a joint is loose. Apply plastic cement in a single thin layer and allow it to dry completely before test fitting. Re-apply more cement if necessary.

Gunpla (plastic model kits) are designed to be built and displayed without the need for painting. Kits are molded in different colours replicating the colours of the actual mecha from the Mecha series. A technique called colour separation, where multiple parts of the model are molded in different colours on the same sprue is also used. Mecha kits often include stickers or water-slide decals that can be applied to the model to enhance its appearance. Some Gunpla kits come with pre-painted parts or parts with pre-applied details, such as metallic or translucent finishes.

Many modelers still choose to paint their kits to customize and add further detail. Painting allows for more creativity and personalization, enabling modelers to achieve unique effects, weathering, and colour schemes that may not be available out of the box. However, the kits are designed to be enjoyable and visually appealing even without painting, making them accessible to a wide range of hobbyists.

Frequently Asked Questions

What types of Gunpla kits are available across your collections?

We stock High Grade 1/144, Master Grade 1/100, Real Grade 1/144, Perfect Grade 1/60, and Full Mechanics 1/100 kits across 45+ years of Gundam series, plus non-Gundam mecha like 30 Minutes Missions, Armoured Core, and Evangelion.

How are your collections organised?

Collections are organised by grade (HG, MG, RG, PG), series (Mobile Suit Gundam, Wing, SEED, etc.), timeline (Universal Century, Alternate Universe), price range, availability (in-stock, pre-order, P-Bandai), and product type (kits, tools, accessories).

Do you stock building tools and accessories?

Yes, we carry precision nippers from GodHand and Dspiae, sanding tools, panel lining markers, paints from Mr Hobby and GSI Creos, Action Base display stands for all scales, waterslide decals, and detail-up parts.

What are Premium Bandai and Gundam Base Limited items?

Premium Bandai (P-Bandai) are exclusive mail-order kits with limited production runs, often featuring unique colour schemes or variants. Gundam Base Limited items are exclusive to Gundam Base stores and include special editions, clear variants, and limited releases.

How quickly do orders ship from your Australian warehouse?

Orders placed before 2pm weekdays ship same day from our Australian warehouse. Orders placed after 2pm or on weekends ship next business day. All in-stock items are ready for immediate dispatch Australia-wide.