Splashdown is a Pretender Autobot who turns into a hovercraft. He is a navel commander, and highest ranking of the original six Autobot Pretenders.
A hard-living, hard-hitting, wind-torn soldier. A veteran of battles on 10,000 oceans on 1,000 worlds throughout the universe. At home on water, mercury, even liquid lead. Outer shell armed with long-range, armor-piercing harpoon gun and electro-sword. Robot and hovercraft modes armed with photon blaster. Outer shell composed of high-density armor impervious to corrosive liquids and strong enough to withstand underwater depths of over 30,000 feet. Transforms to hovercraft with maximum speed of 210 mph.
1984 Marvel Comics
Although not seen or mentioned directly, Splashdown was among the Autobots who joined Fortress Maximus in leaving Cybertron on the Steelhaven for the planet Nebulos (Transformers: Headmasters issue 1). Unfortunately, they were followed to Nebulos by the Decepticons under Scorponok, leading war to break out once more. Fortress Maximus's band left Nebulos for the planet Earth, with the Decepticons in close pursuit. (Transformers: Headmasters issue 4).
When Brainstorm needed subjects to duplicate a Decepticon Pretender experiment, Splashdown and five other Autobots volunteered and became the Autobot Pretenders. They fought the Decepticon Pretenders with the help of Optimus Prime and Goldbug . They soundly defeated their Decepticon Pretender rivals.
Slashdown was seen in the background when Optimus Prime sent Landmine and Cloudburst on their mission to obtain computer chips to repair fellow Autobots in issue 52, "Guess Who The Mechannibals Are Having For Dinner?" 
The Decepticon Pretenders Bomb-Burst, Iguanus and Skullgrin were sent to steal from an oil rig in the "Gulf of New Mexico" in the 1989 UK Annual story "The Chain Gang." They were opposed and captured by the Autobot Pretenders Cloudburst, Landmine and Splashdown.
Splashdown had a biography printed in the Transformers: More Than Meets The Eye series by Dreamwave Productions.
- Hasbro Transformers Pretenders Splashdown (1988)
- A new mold. Turns from robot to Hovercraft. Comes with a 2-pack shell, sword, rifle, gun, helmet and belt.
- Transformers issue 40 (1988)
- Seibertron link