HGUC sits inside the High Grade family, but make no mistake: it is not just another HG. When Bandai launched the High Grade Universal Century line in 1999, it rewrote the rules for what a 1/144 scale gunpla kit could be. The mission was ambitious: bring together every mobile suit from every TV show, movie and OVA set in the Universal Century timeline into one unified, high quality collection. 

Before HGUC existed, older HG kits were decent but limited. The detail was basic, the articulation was stiff, joints relied on simple peg connections and the colour separation often depended on stickers to fill in the gaps. HGUC changed all of that with a genuine leap in technology. The kits introduced sharper moulded detail, much better colour separation through the plastic itself, improved joint articulation using polycap connectors and the use of tinted clear plastic for elements like monoeyes, camera visors, beam saber effect parts and sensor domes. Suddenly, a 1/144 scale kit could look and pose like something from a higher grade. The construction philosophy also evolved. 

HGUC kits use a colour coding system on their box art to indicate which Universal Century property the mobile suit comes from: yellow orange for Mobile Suit Gundam, blue for Zeta, purple for ZZ, red for Char's Counterattack, green for 0080, and so on through the entire timeline. It is a small detail, but it shows the level of care that Bandai put into organising this line as a true collector's catalogue. 

And Bandai did not stop improving it. In June 2015, they launched the "Revive" project to celebrate the 35th anniversary of Gunpla. Starting with the RX-77-2 Guncannon, older HGUC kits were given complete redesigns using modern engineering, with updated proportions, better articulation and cleaner construction. In April 2017, that effort was renamed the "Gunpla Evolution Project" as preparation for the Gunpla 40th anniversary in 2020, and the MSZ-006 Zeta Gundam was the first kit under this new banner, setting yet another benchmark for the line. 

In 2009, the HGUC line incorporated the sub-line HG UC Hard Graph, which featured 1/144 scale military vehicles, infantry soldiers and support equipment in addition to mobile suits. It added a whole new layer of world building to the Universal Century at model kit scale. 

Starting in 2010, the format expanded beyond the UC timeline through the "HG All Gundam" project. Sub-lines like HGAC (After Colony for Gundam Wing), HGCE (Cosmic Era for Gundam SEED, released 2014), HGAW (After War for Gundam X), HGFC (Future Century for Gundam Figther G) and HGCC (Correct Century for Gundam Turn A) were all built on the same engineering foundation as HGUC but covered alternate timelines. You can tell them apart by the silver stripe on the front of the box, as opposed to the gold stripe used for UC kits, along with a corresponding variation of the HG logo. 

But the build quality and design philosophy remain the same. The HGUC catalogue is one of the largest in all of Gunpla. From the legendary gunpla RX 78 and Zaku II to the Nu Gundam, Sazabi, Unicorn Gundam, Sinanju, Jegan, GM, Gouf, Dom, Gelgoog, Kampfer, Kshatriya and dozens more, this line covers the full depth of Universal Century history. It also includes kits from side stories like 08th MS Team, 0080 War in the Pocket, 0083 Stardust Memory, Thunderbolt, Gundam Hathaway and Narrative. If you love the Universal Century or any of the alternate timelines connected to it, HGUC is the collection that ties it all together. It is where Gundam history lives at its most accessible and collectible scale.