Donald "Donny" W. Martin  is an M.I.T. engineering graduate who focused at his energy into creating a self-contained diving suit to be able to fulfill his dream of going deep enough, without a support team, to collect sunken treasure and pillage shipwrecks all on his own.

 

Donny, although a brilliant engineer and innovator, also had a psychotic streak in him.  His competitors at MIT usually found themselves hurt from sudden failures of their own equipment and designs, as well as professors 'disappearing' after Donny was given a dissatisfying grade for certain particular courses.  Following his MIT years, Donny stated his rich parents mysteriously left the country wherein Donny was placed in charge of their finances and estate while they 'explored Greenland'. It didn't take but a couple of years before the estate was sold off and his family fortune was drained. Thanks to lawsuits and copyright infringements Donny had against him in the design of his revolutionary self-contained Deepwater dive suit, he was also sued after a 'test diver' died while testing one of Donny's suits (Test Diver's wife sued Donny for millions of dollars).

 

With no money and a destroyed reputation, Donny instead went back to his MIT alma mater and stole armor designs and energy field equations from the head of the Energy Research Lab at MIT,  Professor John Q. Hamilton (AKA Captain Battleship). It didn't take long for "Captain Battleship" to become involved, therein landing Donny in jail for his theft.
 

While in prison, Donny promised a departing jailbird, a man known as "Rivermaster" that he'd get him millions of dollars in sunken treasure IF he'd help Donny break out of prison and get him access to his own experimental Deepwater dive suit he'd completed just before he was jailed.  Rivermaster reluctantly agreed and a few weeks later, had a gang of pirate thugs help break Donny out of jail.  True to his word, Donny used the suit (without even knowing if it was going to work) and dove down to an old Spanish Galleon shipwreck and brought up millions of dollars in gold, jewelry and many soon-to-be-made Black Market treasures. 

Donny was later introduced to a Captain Akula who led the Maritime Marauders, a band of high tech water-going pirates, all of whom loved robbing, pillaging and looting from others. Now surrounded by like-minded folks, Donny happily joined the Maritime Marauders.

 

Today, "Deepwater" as he is now known, is still with the Maritime Marauders and is using an upgraded Mark I version of his Deepwater Dive Suit that now has weapons and devices on it to use if ever in a fight with any superheroes looking to bar him from looting his sunken treasures. As part of his agreement with the Maritime Marauders, he is allowed to keep his equal share of whatever sunken treasure he finds, however, Donny gets to chose at least 5 items in the first pick of the treasure's items for his own reasons (he usually finds the most sought-after treasure items (some of which might be priceless) and retains or sells them, gaining a significant personal profit on such items vice having to share the profits with the rest of the Marauders (a situation some Marauders still aren't too happy about)).

 

Deepwater is an aggressive psychotic who would rather kill you than argue with you. He has respect for his fellow super-powered Marauders and Captain Akula, but if he can find even a 1% chance to get one over on them, he will (an unsavory pirate, if you will). He is always tinkering with his Deepwater suit, making modifications and updates all the time, while also using said suit to go treasure hunting at every opportunity (sometimes lying about not finding treasure in certain shipwrecks/sites).  His 'family estate' and fortune have since been discovered to have been misappropriated and pillaged by Donny and a formal police and FBI investigation is ongoing into finding out what happened to his parents and Donny's whereabouts.

 

An an additional note, three years ago, Donny got involved with a dusky female bartender in Ireland named Marisa Moore. This girlfriend of his gave birth to their son, Noah.  Marisa doesn't want to have anything to do with Donny, however, Donny is smitten with the idea of being a father, believing he'd have a chance to invoke an ideal childhood for his son; an ideal childhood that an emotionally-abused Donny never had with his own parents.  As such, Donny is now hunting Marisa. Marisa knows of Donny's Deepwater identity (and his psychotic nature) and has gone into hiding. She is currently believed to be traipsing around Europe with their now 2-year old son, working from bar to bar to get by. 

 

Also, as another added note, Donny has faced-off against Captain Battleship several times since initially being arrested by him.  Donny considers Captain Battleship to be his official 'nemesis'.

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