Do I need glue or paint for these Bandai kits?

No. Modern Bandai snap-fit Gunpla kits are designed to assemble without glue, and color is molded into the plastic so they look complete straight from the box. Paint, panel-lining, and topcoat are optional upgrades for hobbyists who want a more finished look. Verified-purchase reviewers consistently note this snap-fit convenience as a core appeal.