diff --git a/lib/GEmeTool/View/PokemonEditorWindow.pm b/lib/GEmeTool/View/PokemonEditorWindow.pm
index 29eaebf..fac6732 100644
--- a/lib/GEmeTool/View/PokemonEditorWindow.pm
+++ b/lib/GEmeTool/View/PokemonEditorWindow.pm
@@ -14,6 +14,7 @@ use Path::Tiny;
 
 use Rsaves;
 use Rsaves::Constants::Emerald::Species;
+use Rsaves::Constants::Emerald::Natures;
 
 Glib::Object::Introspection->setup(
     basename => 'Gtk',
@@ -125,6 +126,8 @@ sub create_modify_personality {
 sub open_window_personality {
     my $self = shift;
     my $window = Gtk4::Window->new;
+    $window->set_default_size(600, 600);
+    my $scroll       = Gtk4::ScrolledWindow->new;
     my $box_window = Gtk4::Box->new('vertical',   1);
     $box_window->append(Gtk4::Label->new('Select shiny'));
 
@@ -161,11 +164,31 @@ sub open_window_personality {
 
     $box_window->append($box_gender);
 
+    $box_window->append(Gtk4::Label->new('Select nature'));
+
+    my $box_natures = Gtk4::Box->new('vertical', 1);
+    my @natures = @Rsaves::Constants::Emerald::Natures::NATURES;
+    my %toggle_nature = map { $_ => Gtk4::ToggleButton->new_with_label($_) } @natures;
+
+    my $nature_dont_mind = Gtk4::ToggleButton->new_with_label('Do not matter');
+    $nature_dont_mind->set_active(1);
+
+    $box_natures->append($nature_dont_mind);
+
+    for my $nature (@natures) {
+        my $toggle = $toggle_nature{$nature};
+        $toggle->set_group($nature_dont_mind);
+        $box_natures->append($toggle);
+    }
+
+    $box_window->append($box_natures);
+
     my $button_generate = Gtk4::Button->new_with_label('Generate personality');
     $button_generate->signal_connect(clicked => sub {
         my @gender_buttons = ($gender_male, $gender_female);
         my $target_shiny = undef;
         my $target_gender = undef;
+        my $target_nature = undef;
         if ($shiny_yes->get_active) {
             $target_shiny = 1;
         }
@@ -178,14 +201,21 @@ sub open_window_personality {
                 last;
             }
         }
-        my $personality = $self->pokemon->generate_personality($target_shiny, $target_gender);
+        for my $i (0..24) {
+            if ($toggle_nature{$natures[$i]}->get_active) {
+                $target_nature = $i;
+                last;
+            }
+        }
+        my $personality = $self->pokemon->generate_personality($target_shiny, $target_gender, $target_nature);
         if (defined $personality) {
             $self->_current_personality($personality);
         }
         $window->close;
     });
     $box_window->append($button_generate);
-    $window->set_child($box_window);
+    $scroll->set_child($box_window);
+    $window->set_child($scroll);
     $window->present;
 }