Kengo Aiba

Tekkaman Omega is leader of the Radam invading Earth, and was formally the eldest Aiba brother Kengo. It is unknown if there is a different type of Radam creature, like a Queen, but Kengo was chosen to be the leader of the invading army. Due to the sabotage by his father, the Argos crashed onto the Moon instead of heading directly for Earth. This seemed to damage Omega as well, as he was stuck on the ship healing/evolving while he had other Radam Tekkamen go to Earth to do his bidding.

Omega is shown to have have 2 forms, a smaller cloaked version, and this large version... but the smaller version is barely ever shown and little bit of line art we have still hides too much. Though depending on the camera angle, even his small form looks massive in comparison to Blade.

Having used Tekkaman Evil's Tek-set crystal to power up and make it to the moon, Blade regresses into his berserk state even before making it to Omega... But even like this, his goal never changed.

Unfortunately, Omega was much more powerful than blade, and due to being connected to the ship ( that is not a tail under him, more like an umbilical cord), was faster and likely had near infinite energy. he could also control the bio-mass radam plant material of the ship, using it's tentacles to thoroughly beat up Blade and nearly killing him. before he could strike the final blow, Pegas appeared and took the hit. For his efforts, Pegas was torn to pieces, with Blades crystal falling in front of him in 2 pieces. Pegas' head bounces once more in front of Blade letting out one final call to him...

We then see a shot of Evil's crystal in Blade's hand, and Blade evolves into his Blastor form, one final time. He walks slowly towards Omega in a tower of energy that even Omega cannot deal with... And using the Blastor Voltekker, Omega and the Radam ship are destroyed.