Bands who became people, people who became bands

Marilyn Manson came to mind.... still thinking.

well, there were the POLICE but they got disbanded by a STING

thinking

Maybe not the same, but when I was a kid I didn't realise Mungo Jerry was the name of a band. I thought it was front man Ray Dorset's real name.

I'm not sure I'm using your linked website correctly because it just brought up a song list but I'm thinking --

Blondie.

Eminem?

Jethro Tull?

Van Halen?

The Ramones?

Captain Beefheart?

Bon Jovi.

Jethro Tull, absolutely.

Jethro was the inventor of the seed drill, revolutionising farming.

And a celebrated castrator, judging by what he's holding in his left hand.

That's his Georgian Rampant Rabbit. He invented that as well but had to wait for someone else to invent batteries, so it never took off at the time.

So far only pearly gets a prize.

Marilyn Manson is indeed the band's name and the artist's name. Kind of unsurprising considering he/they updated Alice Cooper's shock rock for the nineties. Or should that have been Alice Coopers'?

I thought boomer might be on a winner with Captain Beefheart, but that was only ever Don Van Liet's pseudonym, his band was the Magic Band

Bon Jovi was only ever the band, John Francis Bongiovi, Jr used the moniker Jon Bon Jovi in his solo efforts.

Blondie got their name from Deborah Harry's platinumness, but she never recorded solo using that name.

Jethro Tull, sadly, never built on his fame in agricultural engineering to branch Minogue-like into recording And missed a golden opportunity to join a band that had his name, by dying quite few years before any of the members were born.

Eminen was only ever Marshall Mathers' pseudonym.

Perhaps strangely, for all the members of The Ramones (e.g. Joey, Dee Dee, etc) none of them had the foresight to name himself 'The'.

Alex and Eddie Van Halen always included their first names when not recording as a band.

And while its outside my purview I'm pretty sure castration refers to the removal of the testicles https://en.m.wikipedia.org/wiki/Castration

It might be the iPad screen but it looks like Jethro has been experimenting with penectomy. Parental advisory warning https://en.m.wikipedia.org/wiki/Penectomy

If you put the artist you're thinking of into the search at the top of the page the ones Hinge is looking for will be listed twice as an artist with a (2) after the second listing. You can click on a brief description so you can see that one listing is referring to the solo artist and one is referring to the band.
I tried a lot more without any luck. I'm quite ignorant about music - but I enjoy a challenge.