H.I.S.S. tank
- HISS tanks are Cobra vehicles from the Generation 1 continuity family.
The Cobra HISS tank is a mobile type of tank. "HISS" stands for "High Speed Sentry".
Fiction
G.I. Joe Starring Snake-Eyes and Transformers Generation 2 comics
Some of the HISS tanks at Silent Castle were equipped with a new type of rail gun designed by Sidney Biggles-Jones. When Megatron attacked the castle, Sidney Biggles-Jones fetched a tank and blew a hole through Megatron. Impressed with the rail gun's power, Megatron agreed to a deal with Cobra Commander that would get him a new body. Once Megatron was rebuilt, Cobra Commander provided him with three radio-controlled HISS tanks to test the new body's abilities. Megatron destroyed them all in one fell swoop. Realignments
Devil's Due G.I. Joe vs. the Transformers comics
When Cobra unearthed a number of deactivated Transformers, they reprogrammed them and gave them new vehicle modes. Optimus Prime, Ironhide and Ratchet were modified into HISS tanks and utilized during Cobra's first Transformer-aided act of terrorism. G.I. Joe vs. the Transformers #1 Cobra wasn't satisfied with the way Optimus Prime, HISS-14, functioned and had Doctor Mindbender take a look at it. G.I. Joe vs. the Transformers #2 Thanks to Wheeljack and Bumblebee, the three and all other Transformers were freed from their servitude to Cobra not much later. G.I. Joe vs. the Transformers #4
