Special characters in column

Wow!
I would want to get you in that much trouble.
That is an impressive query that I theoretically know what it does but it is really no use to me.
I brings me 191 values. Some aschii , all the Greek alphabet caps and non caps and letters with tonos and without tonos .
Now, I get a value 63 that looks like the character in question but I get it multiple times:

М 63
ϛ 63
Д 63
63
ћ 63
а 63
ј 63
р 63
л 63
63
н 63
? 63
о 63
В 63
е 63
к 63
и 63

This |�|63| looks like the value

If i do this:

 select * from members
 where membership_name like '%'+char(63)+'%' COLLATE Greek_CI_AI;

I get no row at all.

Thanks