Whyachi was a word coined in the team's shop that meant "to bring someone down hard and to inflict massive amounts of pain or damage", which certainly describes the robot well.
Builder Terry Ewert applied for Robot Wars: Extreme Warriors with Son of Whyachi, but was turned down, most likely due to concerns that the robot would cause excessive damage to the house robots and due to copyright issues with BattleBots.
The chassis of Nitro SOW still exists today and is put on display every year at the annual Mecha Mayhem tournament, alongside its teammate Falcon.
Son of Whyachi before Season 3.0.
Crabmeat takes a massive hit from Son of Whyachi.
Crabmeat took several deadly hits from Son of Whyachi's hammers, bending its wheels. Eventually Crabmeat stopped moving and Son of Whyachi won by KO at 1:42. This win put Son of Whyachi to the round of 32, where it faced Kill-O-Amp.
Son of Whyachi hits Kill-O-Amp's right wheel.
In this fight, one decisive blow to Kill-O-Amp was all Son of Whyachi needed to immobilize the then-charging robot, as it destroyed its kill switch on contact. Kill-O-Amp was counted out and Son of Whyachi won by KO at 49 seconds. This quick victory put Son of Whyachi to the round of 16, where it faced the feared Nightmare
This battle was over quickly as Son of Whyachi and Nightmare moved slowly towards the center of the BattleBox. Nightmare attempted to line up its blade with Son of Whyachi's hammers but got lifted around by the hellraisers as Peter Lamberson hit the wrong button. Then, in one amazing hit, Son of Whyachi sent Nightmare flying, its wheels torn off, into the corner of the BattleBox. Nightmare was destroyed and counted out. Son of Whyachi won by KO at 48 seconds and advanced to the quarterfinals, where it faced MechVore
For this fight, MechaVore fitted a panel on one side with an embedded barbie doll and glued its battery on top. When the fight started, MechaVore and Son of Whyachi avoided each other for a while before MechaVore drove past and had the added panel torn off. MechaVore crashed into the wall but recovered and drove away. As it did, Son of Whyachi clipped MechaVore. MechaVore attacked Son of Whyachi but was repelled and sent across the BattleBox. MechaVore drove at Son of Whyachi again and managed to hit it without being repelled. The next attack from Mechavore saw it crash into the wall. After moving away from the wall, MechaVore attacked again, hitting Son of Whyachi but getting repelled by Son of Whyachi. Son of Whyachi started to move out of the blue square only for MechaVore to attack it and stop the cage, stopping its own disc at the same time. MechaVore attacked again but drove onto the cage because of the killsaws. It was clear that the cage had broke and Son of Whyachi was shoved around before MechaVore pushed it past the entrance ramp towards the pulverizer. As Son of Whyachi freed itself, MechaVore made a sharp turn to line itself up with Son of Whyachi but hit the spikestrip and knocked its battery loose, causing it to stop moving. Son of Whyachi escaped the pulverizer and won by KO. This win put Son of Whyachi to the semifinals, where it faced HexaDecimator.
As the fight started, HexaDecimator charged at Son of Whyachi and had armor on the left side damaged. A couple of attacks later, the front left panel was torn off. HexaDecimator charged at Son of Whyachi again but the flipper got caught on Son of Whyachi's cage, which resulted in a time-out to separate the robots just as Son of Whyachi was moving HexaDecimator to the pulverizer. When the fight resumed, HexaDecimator was not able to move, possibly due to the battery wire being pulled out when the robots were separated, and HexaDecimator was counted out. This advanced Son of Whyachi to the final.
Son of Whyachi advanced to the heavyweight finals, where it faced off against BioHazard for the Giant Nut. The fight began with Son of Whyachi being charged at by BioHazard, but Son of Whyachi had already got its cage up to full speed. The resulting hit tore off BioHazard's front left skirt and sent BioHazard spinning across the BattleBox floor. Son of Whyachi was rammed by BioHazard once more, but Son of Whyachi promptly threw BioHazard across the BattleBox again. Son of Whyachi's weapon had lost one of its red support rods at one end as a result of this second hit. As a result, Son of Whyachi got stuck at the spikestrip with its body spinning at full speed, allowing BioHazard to lift Son of Whyachi into the pulverizer. Once Son of Whyachi escaped, it was pushed by BioHazard into the pulverizer further, where it got pounded for 30 seconds. Son of Whyachi was then lifted into the BattleBox Lexan, nearly getting overturned. However, this hit seemingly incapacitated BioHazard, as it did not move for quite a while. During this time, Son of Whyachi freed itself from the corner of the BattleBox and spun its now-unstable blade back up to speed. SoW then ripped off the entire right-side skirt of BioHazard. The referee began counting out BioHazard, as it had stopped moving, but just as he reached 7, BioHazard recovered and drove back into the center of the BattleBox. Son of Whyachi then debilitated BioHazard's entire right drive system following BioHazards frontal assault, leaving it spinning in circles. This time around, BioHazard was counted out, leading to boo'ing from the crowd. However, since BioHazard was still mobile on one side with 10 seconds left on the clock, the KO was changed to a judges' decision. Son of Whyachi won on a 29-16 judge's decision and became the new heavyweight champion.
Son of Whyachi didn't participate the heavyweight royal rumble at the end of the tournament most likely due to damage from BioHazard during the heavyweight final.