I'm like the hull of the sun. What am I?

I'm like the hull of the sun.

But I'm not a star.

And end like a keeper

But without opposing directions

What am I?

Hint

I'm not a thing, I'm a person

Edit

Changed the last line from But only like so. It is a more consistent part of the riddle now

• Would it be too obvious if I said it was popcorn?
Jan 20, 2019 at 20:18
• It's not that obvious Jan 20, 2019 at 20:20
• But popcorn is not that obvious. The only reference to popcorn would be kernel Jan 20, 2019 at 20:25
• Well the sunny nature suggested popcorn kernel and there is a suggestion of a transformation so my first instinct was popcorn but obviously it is more in-depth than that
Jan 20, 2019 at 20:31
• ROT13(Havk-yvxr flfgrzf fghss? Fha, Xreary, Funerq Bowrpg...) Jan 21, 2019 at 11:04

I think this answer might actually be

Coroner

I'm like the hull of the sun.

Sounds like corona, as found by jafe

But I'm not a star.

Not usually famous.

Core (also discovered by jafe)

And end like a keeper

Owner

But without opposing directions

Core + Owner = Coreowner = Coroner, when we remove E and W (East and West)

Obviously, jafe's answer filled in many of the lines so do upvote that answer too.

Are you

the footballer Corona?

I'm like the hull of the sun.

The outer part of the Sun and other stars is called the corona.

But I'm not a star.

Not really a household name.