I remember seeing the premier trailer for Robotomy and the main characters Thrasher and Blastus stood out to me as two robots that would have been henchbots or minions working under a villain but didn't know who. A few years later, I watched this show Wander over Yonder, and saw the first villain, Lord Hater. At first, I imagined these two pairing with Hater similar to the villains from AOSTH (yes it was an old guilty pleasure), but after watching the second season of WOY and discovering Lord Dominator, I realize instead of Hater, Dominator having these two robots working for her actually makes up the "Terrible Trio" trope (personal favorite trope). The inspiration behind this came from an anime series called Time Bokan's Yatterman with its main villains the Doronbo gang, and a Western animated show "The Venture Bros" with the show's villains the Monarch and Henchman 21 & 24. The terrible trio's goal after Dominator's downfall would be to rebuild her villain reputation, finding and collecting Volcanium X or other powerful artifacts to power her future empire, and whether to conquer the galaxy this time or go back to destroying it (regardless the latter being in vain since the dead planets grew back life), but only to be constantly foiled by Wander and Sylvia, stronger villains, or actual galactic heroes (or a galactic government system if WOY would establish one).
Personally, if it weren't for the fact that both shows were mistreated badly by both their respective networks and cancelled, this trio could work together, why?
Dominator's minions are mostly robots she made. So, after her defeat, I like to imagine she required assistance and buys off parts of Thrasher and Blastus from a sleazy merchant with all the money she had left to build herself personal henchbots, but realized these robots are majorly harmless, and she can't afford any more for better robots, she would have to modify them from the ground up to be bad bots.
Thrasher and Blastus grew up in a planet where robots destroy each other on a daily basis, even having to move from planet to planet 6 times very month because they keep destroying their own planets, so even if Dominator still had her destructive nature, these two would be cool and just roll with her plans since they're used to planetary destruction.
Dominator doesn't have friends, nor does she have any interest in making one. Thrasher and Blastus are robots who have their own thoughts and even feelings, something that makes them stand out from most other robots, so having them work, interact, and get along with her would make some potential character development for Dominator while still being a villain.
Thrasher and Blastus from the original show may not be bad guys, but from what their school taught them is to become destructive and violent robots, something these two tend to struggle with but in some miracles still manage to pass and prevail. I imagine they would barely graduate and get pawned off to be someone's personal henchbots.
Dominator would be the boss of the group and in charge of how to rebuild her empire and ship and in occasions make plans for giant mecha robots (since she made her first ships and robots by herself). Thrasher and Blastus not only would provide their strengths, but Blastus coming up schemes and scams to raise money to build up Dominator's ship and robots, and Thrasher providing logical planning and advice to their boss, being the level-headed of the group.
Thrasher and Blastus had some experience on having feelings of hope, love, and friendship, that it literally almost got them killed, being sent to a giant sun, so they would destroy anyone who holds that ideology, especially Wander. Not to mention Jack McBrayer voice both Wander and Frenemy from Robotomy, who was obsessed with being Thrasher and Blastus’ friend, they went to meet Frenemy in person just to destroy him, so I imagine when Thrasher and Blastus meet and get to know Wander, they would straight up attack him, and anyone associated with him on sight.
(I also did some redesign for Dominator's attire; personally, I didn't like her official design from the show, especially after reading the reason why she dresses similar to Hater, so I gave her outfit some red and black to go with Blastus' blue and Thrasher's yellow, and designed her helmet based on Weenus' head design, since both characters look almost similar.)