Sorry, neither VEGETA or Raigeki means anything at all to me, and I'd be pretty confident a majority of others who are not into Manga (I had too google the name)
neither does afrotechmods or greatscott. Same thing.
At least they make some sense in parts.
"Afro" is an afro, the symbol he uses for the channel, "tech" is tech of course, and "mods" is mods as anyone in tech will know.
great and scott are both easily recognisable words, and anyone who knows Back To The Future will know the reference.
I guess the name will not have much effect, which is proved by these names of famous channels. Eventually you are building a brand name for your content and people will know it by time. This is my personal observation after all.
Yes, you are building a brand.
In my case EEVblog which I didn't like at first has become my "brand" and "EEV" can be used for other things like EEVacademy EEVdiscovery etc.
And also in my case when I started there was practically no one doing Youtube full time, it wasn't a thing, it was just for fun.
Do you like the name? would you have changed it back in time? I mean if you have a nice name in mind, I guess you should go with it. Of course not now after +1k episodes.
I didn't like, it was just an acronym for Electronics Engineering Video Blog, but it stuck. I would not change it now because it's my brand, it's unique, and it's versatile.
Most companies actually pick irreverent names like Apple and maybe Android... eventually it sticks. I would like to think the same.
In your case they are not great names because they don't mean anything to most people unless they know the gaming reference.
And also, and perhaps most importantly, they are already used.
e.g. You can't buy VEGETA.com or Raigeki.com
If people google these names then they likely won't get your website, they'll get gaming reference. It will be hard for you to get good SEO.
Heck, you can't even get the Youtube channel ID's because they are taken
https://www.youtube.com/user/vegetahttps://www.youtube.com/user/RaigekiI would not use those names because of that, they are not unique enough.
Would you change it if you knew this would happen? do you really prefer tagged or un-tagged for your current channel? I see very successful channels do not number like greatscott but others do number like voltlog. Both ways can get a lot of views and both of them can get nothing.
It doesn't make a difference, just chose what you like.