Replace a given letter with the superscript letter (except q).

Get-Superscript.ps1

function Get-Superscript {
    param ($letter)
    switch ($letter) {
        "a" { [char]::ConvertFromUtf32(7491 )}
        "b" { [char]::ConvertFromUtf32(7495 )}
        "c" { [char]::ConvertFromUtf32(7580 )}
        "d" { [char]::ConvertFromUtf32(7496 )}
        "e" { [char]::ConvertFromUtf32(7497 )}
        "f" { [char]::ConvertFromUtf32(7584 )}
        "g" { [char]::ConvertFromUtf32(7501 )}
        "h" { [char]::ConvertFromUtf32(688  )}
        "i" { [char]::ConvertFromUtf32(8305 )}
        "j" { [char]::ConvertFromUtf32(690  )}
        "k" { [char]::ConvertFromUtf32(7503 )}
        "l" { [char]::ConvertFromUtf32(737  )}
        "m" { [char]::ConvertFromUtf32(7504 )}
        "n" { [char]::ConvertFromUtf32(8319 )}
        "o" { [char]::ConvertFromUtf32(7506 )}
        "p" { [char]::ConvertFromUtf32(7510 )}
        "q" { "q"                            } # https://www.quora.com/Why-is-there-no-character-for-superscript-q-in-Unicode
        "r" { [char]::ConvertFromUtf32(691  )}
        "s" { [char]::ConvertFromUtf32(738  )}
        "t" { [char]::ConvertFromUtf32(7511 )}
        "u" { [char]::ConvertFromUtf32(7512 )}
        "v" { [char]::ConvertFromUtf32(7515 )}
        "w" { [char]::ConvertFromUtf32(695  )}
        "x" { [char]::ConvertFromUtf32(739  )}
        "y" { [char]::ConvertFromUtf32(696  )}
        "z" { [char]::ConvertFromUtf32(7611 )}
        default { $letter } # to support string conversion
    }
}

# example 1:
Get-Superscript -letter m

# returns: ᵐ


# example 2: 
$String = "Mike Crowley!"
($String -split "" | foreach {Get-Superscript $_} ) -join ''

# returns: ᵐⁱᵏᵉ ᶜʳᵒʷˡᵉʸ!