• Interchangeable wrist parts (three types each for the left and right)
• Composite shield booster
• Beam rifle
• Beam saber blades x 3
• Beam saber handles x 3
• Interchangeable heat blades (two types)
• Auxiliary thruster units at the bottom of the legs x 2
• Pedestal joint
• Pedestal and support column

Additionally, the set includes two bonus beam sabers, allowing for various equipment combinations and display variations.

The Haze'n-thley features a die-cast construction for its joints and other key parts, providing a sense of weight and durability. Each part is meticulously detailed, with unique decal markings reproduced through tampo printing, adding to the overall luxurious feel of the model.

The sub-arms and shoulder weapons are equipped with built-in gimmicks, offering a high degree of flexibility and movement. This allows for dynamic poses and an enhanced display experience.

The RX-121-3C Gundam TR-1 [Haze'n-thley] is considered the Hazel series' ultimate unit. It combines components from the RX-124 Gundam TR-6 [Haze'n-thley II] and the RX-121-2A Gundam TR-1 [Advanced Hazel]. This combination resulted in a major departure from its predecessors, with nearly all RGM-79Q GM Quel parts replaced with TR-6 enhancement parts.

The upper body of the Haze'n-thley is based on the unmodified form of the Woundwort high-speed fighter, giving it a unique head, chest, and shoulder design. The upper body of the TR-6 is compatible with the Hazel's Primrose escape mechanism, allowing for this combination. Notably, the TR-6 components are fitted above the body of the RX-121-2 Gundam TR-1 [Hazel Owsla], leaving the Owsla's head and chest structures exposed beneath the improvements. The TR-6 booster pod is linked to the movable booster pod from the original Hazel, and the basic TR-6 mobile suit's chest and arms are coupled to the waist as a sub-arm unit.