Second Villain Of Each Arc

[Let's Go Fearless!]

So basically, on Freeza arc Vegeta was the second villain. Androids Arc, it was Gero and from Boo arc it was Babidi. Can we agree with this? Also if yes then who has a bigger impact in the series and also better?

 

[Pocket-Gog~]

Moro arc: Main villain, Toyo. Second villain: Moro