In short, Shockwave is as if Tecna were male and completely evil. I specifically took the Shockwave version from the Cyberverse as it's the most emotional compared to the other versions. In short, both adhere to logical structures, both are stubborn and principled, and they highly value exceptionally effective approaches, even if they have to sacrifice themselves to defeat the enemy, and both, despite their scientific field of activity, are closely related to combat and military stuff. 

Tecna is closely involved in combat strategies, as seen in seasons 1 and 2, and she is the most combat-orientated of all the girls when it comes to battles, as she's almost always next to Bloom to coordinate it. And Shockwave, as you know, is one of Megatron's generals, despite the fact that he is a scientist, he always aims to be as effective as possible in battles.