F-sharp minor isn't actually any "scarier" than any other minor key. Minor keys can make music sound sad, ominous, angry, uneasy, tense, or dark (etc); however, a piece of music that is written in a minor key, such as f-sharp minor, will not automatically sound frightening. The specific mood of a song depends on a number of factors, including:
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
G Major or e minor. The sharp would be F sharp.
G flat minor or F sharp minor. F♯, C♯, G♯, D♯, and A♯ minor all have a G♯ in their key signature.
The key with 6 flats is G flat major (this is the same as the key with 6 sharps: F sharp major). The relative minor is e flat minor (also called d sharp minor).
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
The parallel minor of F-sharp major is F-sharp minor. A parallel minor key is the one with the same tonic note.
The key of E minor has one sharp: F sharp. It is the relative minor of G Major.
A major, or F# minor
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
Firstly, there is no B minor chord in the key of F sharp minor. Rather, it is A sharp minor chord. And you can use any chord at the end of a chord progression. Why not!
G (or E minor)
Yes, it sure is.
B Major and G sharp minor. The sharps are F, C, G, D, and A sharp, in that order.
F# major, C# major, D# minor, and A# minor
G Major or e minor. The sharp would be F sharp.
The corresponding minor key to G Major is e minor. The key signature will be the same, one sharp: F#.
There are five key signatures with G sharp, they are: A major/F♯ minor (3 sharps) E major/ C♯ minor (4 sharps) B major/G♯ minor (5 sharps) F♯ major/D♯ minor (6 sharps) C♯ major/A♯ minor (7 sharps)