In the show Hydra was described as a deadly underworld assassin, who was also a skillful actor and disguise artist.
The lifeless mechanoid bodies known as "Transtectors" which would come to be owned by Buster and Hydra were stolen from a region of space called the G Nebula by the evil energy entity and self-styled "Decepticon God," Devil Z. Some years after the Decepticons were banished from Earth by the Autobots in 2011, Devil Z recruited two human beings, Lord Giga and Lady Mega, to find human partners for the Transtectors. A pair of brothers from Germany were soon found and bonded to two jet Transtectors, given the power to summon the Masterforce and transform into engines that allowed the jets to assume robot mode; Hydra, a master disguise artist and actor who plied his trade in the deadliest way as an assassin for the American criminal underworld; and the younger Buster, as cool as his elder brother, but more suave and amiable, and with a love of birds. Able to wield the power of lightning and wind, respectively, and to heal from any damage almost instantaneously, the two brothers can merge their Transtectors into the giant jet, Darkwings.
A string of defeats from the Autobot Godmaster Ginrai throughout their time serving as Decepticons eventually prompted Buster and Hydra to seek new ways to increase their power. Whereas Giga and Mega embraced the human aspect of their nature as Godmasters, Buster and Hydra rejected it, feeling that it was this which made them weak, and requested that Devil Z transform them permanently into entirely robotic beings. The villain did so, and Buster and Hydra were fused with their Transtectors as true robots, but even with this power, they proved unable to best Ginrai, and when Devil Z was destroyed, they fled into space with the other Transtectors that he had brought to life.
Hydra hates being left alone. Unfortunately for him he has been stationed by himself on a distant bunker in the middle of nowhere. He can be very friendly, often a little too friendly. His joyful attitude around other Predacons tends to weird his guests out. In an almost pathetic turn of events his best friend happens to be the maid droid stationed with him at his bunker. Being his only companion, he is very protective of it. Hydra may suffer from cabin fever but he is still a talented warrior whom the Predacon’s can always count on when they need additional support.
In beast mode Hydra transforms into a soaring pterodactyl. In this form he can glide silently over the heads of an enemy and unleash an onslaught of grenades. In robot mode he carries a proton blaster which can automatically lock onto even the quickest of targets. He is also a master technician. Hydra’s exposure to solitude and severe level of cabin fever has left him a little on the crazy side. His unleveled mental circuits often impair his judgement.