Why not:

use Data::Dump;
my $string = 'LarryWall';
my @array = split//, $string;
dd @array;
[download]

(Data::Dump is just to show what's in the array)

Here's a oneliner doing the same thing

perl -MData::Dump -e 'my $str = 'LarryWall'; my @arr = split//,$str; d
+d @arr;'
[download]