STH

STH-16 Shiden Front Rear STH-16 Shiden (STH-16 獅電) Unit Type

Mass Production General-Purpose Mobile Suit

A mass production, general purpose model developed by Teiwaz based on the technology accumulated from the development of the Hyakuri and Hyakuren.[1][2] The Shiden's Io Frame was designed from scratch, but as it shares the same design philosophy as the Hyakuri and Hyakuren's Teiwaz Frame, the two appear to be sister machines even to great technicians.[1] Although the Io frame uses Ahab Reactor from the Calamity War era that was recovered from the debris zone, it is still extremely valuable as it uses the latest technology in the crafting of its frame material to its design and development.[1]

As a mass-produced machine, the Shiden has a good balance of close and ranged combat capabilities as well as mobility, to meet the needs of pilots with varied level of skills and proficiency.[2][3] This easy to maintain machine also has high versatility, with a variety of interchangeable equipment to suit different environments or situations.[1][2][4] Its main head camera has multiple sensors, and is protected by exchangeable visor.[1][5] The suit is geared towards group rather than solo combat, thus despite being newer than the Hyakuri and Hyakuren, its individual performance is inferior to the EB-06 Graze.[1][6] The strongest point about the Shiden is that it is being further developed.[1]

In recognition of Tekkadan's combat abilities, it was given priority deployment of the Shiden at a low cost and Lafter Frankland as well as Azee Gurumin were sent to train the organization's member in the use of the mobile suit.[2] During Tekkadan's defense of the Admoss Company's half-metal mine from the Dawn Horizon Corps, two Shidens were deployed alongside Norba Shino's STH-16/tc Shiden Custom. The three mobile suits were able to hold off the first wave of UGY-R45 Garm Rodis, and took out at least two units. Just as they were about to face the second wave of enemy units, the ASW-G-08 Gundam Barbatos Lupus arrived, and forced the enemies to retreat. More Shidens were later deployed when Tekkadan defeated the Dawn Horizon Corps in space. During the space battle, Dante Mogro was caught off guard and forced to detach his Shiden's right arm to avoid grappling in close quarters with the enemies' IPP-66305 Hugo.

During the Arbrau-SAU conflict, Tekkadan Mars HQ sent reinforcements that included several Shidens and their pilots to its Earth branch, who were serving Arbrau. The Shidens were used in the ambush against Galan Mossa, who was responsible for the war, and his mercenaries, overwhelming them and their older mobile suits.

When the mobile armor Hashmal awakened on Mars, the Shidens and UGY-R41 Landman Rodis were deployed to stop the mobile armor and its Pluma sub-units. During the battle, Ride Mass' Shiden was damaged by the mobile armor's beam weapon when it tried to protect an agricultural plant, and subsequently overwhelmed by the Plumas. However, it was saved by Mikazuki Augus in Gundam Barbatos Lupus. When the Hashmal was finally isolated, the Shidens and Landman Rodis held off the Plumas, so that the Gundam Barbatos Lupus could defeat the mobile armor.

Like Tekkadan, the Turbines also received the Shidens, albeit painted in different colors. These machines were deployed to defend the retreating transport ships when Turbines came under attack from Gjallarhorn after they were framed for illegal possession of the Dainsleif railgun. Tekkadan's Shidens were later deployed to attack JPT Trust to avenge the Turbines. After that, Tekkadan used its Shidens and other mobile suits to aid McGillis Fareed's coup forces against the Arianrhod Fleet.

After losing the battle against the Arianrhod Fleet, Tekkadan retreated back to Mars. The Arianrhod Fleet followed and eventually sent troops to surround Tekkadan's Mars HQ. Tekkadan's remaining mobile suits, including Shidens, were then deployed to buy time as the other members escaped through a tunnel. During this battle, Eugene Sevenstark launched in the STH-16/tc2 Orga's Shiden. Though this machine was originally intended for use by Orga Itsuka, he never piloted it.

Heeding Mikazuki's advice, Eugene and the other mobile suits' pilots left Mikazuki and Akihiro Altland to fight the enemy while they retreated to the base and escape via the tunnel. What happened to Tekkadan's Shidens after that is unknown.