SD means super deformed: kits of the same mobile suits in short proportions, which Bandai's SD Gundam Cross Silhouette page sets against a tall (CS) proportion. Bandai sells them in several lines, including BB Senshi, SD Gundam EX-Standard and SD Gundam Cross Silhouette.
Our SD hub holds 780 items with a median of ¥660 with tax (Bandai's lists, read Oct 11, 2026).
Read Oct 14, 2026. The definition is ours; facts come from the pages above.