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Which one is correct?

Probably the craziest person you've ever met.

Probably the craziest person you ever meet.

and

Probably the craziest person you know.

Probably the craziest person you knew.

Please help to enlighten me.
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These work for me

He's probably the craziest person I've ever met.
but

He's probably the craziest person you'll ever meet.

Choosing the right pronoun is important in these phrases.
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Probably the craziest person you've met. OK

Probably the craziest person you meet. Not great.

Probably the craziest person you know. OK

Probably the craziest person you knew. Possible.
_________

With superlatives (e.g., craziest), the most natural continuations are

Dynamic verb:
you've (ever) met.
you'll ever meet.

Stative verb:
you know.
you've (ever) known.
you'll ever know.

CJ
Students: Are you brave enough to let our tutors analyse your pronunciation?
Comments  
Evening.

Which one is correct.

Probably the craziest person you've met.

Probably the craziest person you meet.

and

Probably the craziest person you know.

Probably the craziest person you knew.

Please help to enlighten me.
 Ivanhr's reply was promoted to an answer.
 CalifJim's reply was promoted to an answer.
Students: We have free audio pronunciation exercises.
thank you Emotion: smile

You’re the best person that I have ever met

anonymous

You’re the best person that I have ever met.

As shown.

(And thank you. Emotion: smile )

CJ

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ever met this guy? or ever meet this guy?