Dumplin first met Towa during his missions on Planet Namek and the first thing he laid his eyes on was her underboobs. Towa didn't know anything about Dumplin and prompted to poke him with her staff. At that point, Dumplin became interested and into Towa.
After Dumplin saves Future Trunks from the Future Cyborgs Towa appears and reveals that she made two changes to history while pole dancing with her staff resulting in Dumplin's jaw dropping, amused by Dumplin's expression, Towa laughs.
Once Dumplin destroys Mira he immediately hits on Towa noting she is single now though Towa leaves afterwards.
Dumplin decides to time travel to find Towa. When he does he asks her to help him fight the Oozarus, which Towa agrees too. After Towa severely damages the Great Apes and Dumplin finishing them off, he was impressed with her that he called her his "Top Bitch".
Seeing how funny Dumplin was and how he effortlessly defeats their opponents, Towa made Dumplin #1 on her favorites list.
Towa falls in love with Dumplin finding his character to be cute and Dumplin seduces her then they both marry becoming the Dumptruck and the Towtruck Combo.
Episode 42 reveals that Towa is one of the only people Dumplin will never kill. Towa was fighting Vegetto and putting so much effort in her attacks to please Dumplin.
Episode 46 shows Dumplin wanting to get two Towas since he figured that if he is already able to get one, "And then they both agree then we're in business." He finds a timeline with another Towa that he has to fight to prove that he is better than Mira. Proving his strength and his rightful position as Demon God, Dumplin defeats both the alternate Mira and Towa, destroying Mira and seduced the second Towa making her join him like he did to the first.
Pre Xenoverse 2Edit
In between the events of the first and second games, Dumplin and Towa were confirmed to have a daughter named Puddin who would follow in her father's footsteps joining the Time Patrol.