With an engine freeze officially coming into effect, the Red Bull team will in all likelihood persist with using Honda engines in 2022. That being said, the Japanese manufacturer will not allow the team to use the Honda brand name and hence Red Bull will officially have to call their power-units something else.
One of the teams who pioneered this concept are Arrows, who in 1980 rebadged their BMW engines as "Megatron," though this was before the Transformer franchise really came into existence.
Fast forward a few years and the team were at it again, running "Supertec" and "Asiatech" engines, which in reality were power-units produced by Renault and Peugeot respectively.
Other teams have also partaken in the practice with Prost running "Acer" engines (Ferrari), Sauber running "Petronas" power (Also Ferrari), and "Fondmetal" which were essentially Ford/Cosworth engines.
As touched on earlier, Red Bull themselves re-badged their Renault engines as "Tag Heuer" between 2016 and 2018 as their relationship with Renault deteriorated over the course of 2015.
It will be interesting to see how the team moves forward in 2022, however, with a year left to go till then, the team will have plenty of time to brainstorm a compelling and catchy name for their power-units.