|First appearance||Trust Exercises|
|Voiced by||David Kaye|
Hammerstrike is a shark-like Sharkticon that greatly despises being on land. His alt-mode is a shark-like Cybertronian submarine.
After the Alchemor crashed on Earth, Hammerstrike escaped from his stasis pod to explore the planet's oceans. He attacked an oil tanker called the "Windward" and was soon confronted by Grimlock and Bumblebee. Hammerstrike managed to get Grimlock off him and attacked Bumblebee. Bumblebee fought Hammerstrike and had the upper hand until the arrival of the coast guards distracted Bumblebee. Hammerstrike turned the tables on Bumblebee and warned Bee to not follow him. Hammerstrike escaped and went off to a nearby oil refinery. After learning that Hammerstrike plans on creating his home world environment by polluting the sea with oil, Bumblebee and Grimlock attempted another attack on Hammerstrike at the oil refinery. When they held Hammerstrike against a wall, the Decepticon breaks an oil pipe that soon floods the ground with oil. Bumblebee and Grimlock were slipping over the oil while Hammerstrike is suited for it and uses it to his advantage. In his vehicle mode, Bumblebee managed to push Hammerstrike into an empty oil barrel that Grimlock was holding as a trap for the Decepticon. Grimlock closed the lid and trapped Hammerstrike. Despite not getting to punch him, Grimlock was happy to punch Hammerstrike from inside the barrel.
Hammerstrike is extremly offended by dry land and anything that comes from it. He is even insulted to walk on land with his own legs and would complain about being touched by some land dweller. He also enjoys watching others fall in the oil that he slides around in.
In water, Hammerstrike is a formidable opponent. Despite his deep hatred for land combat, he is a well effective fighter on his feet, especially if the land is covered in oil, which allows him to attack his enemies and slip around them.
Robots in Disguise
- Trust Exercises (Debut)
- Hammerstrike closely resembles to an Earth shark called a Hammerhead.
- Hammerstrike is voiced by David Kaye, who also voices Megatron in Beast Wars, and the Unicron Trilogy. He also voiced Hardshell in Transformers: Prime