diff --git a/Include/Fledasty/Core/Stack.h b/Include/Fledasty/Core/Stack.h
index bcf0a97..fc0d237 100644
--- a/Include/Fledasty/Core/Stack.h
+++ b/Include/Fledasty/Core/Stack.h
@@ -34,7 +34,7 @@ typedef struct {
     unsigned char *buffer;
 } FledastyStack;
 
-FledastyError fledasty_stack_initialize(FledastyStack *new_stack, const size_t element_byte_size);
+FledastyError fledasty_stack_initialize(FledastyStack *new_stack, void *values, const size_t values_size, const size_t element_byte_size);
 FledastyError fledasty_stack_destroy(FledastyStack *current_stack);
 
 FledastyError fledasty_stack_push(FledastyStack *current_stack, void *value);
diff --git a/Src/Core/Stack.c b/Src/Core/Stack.c
index 4a377c0..f59775c 100644
--- a/Src/Core/Stack.c
+++ b/Src/Core/Stack.c
@@ -26,18 +26,30 @@
 #include <Hallocy/Core/Memory.h>
 #include <Hallocy/Utils/Error.h>
 
-FledastyError fledasty_stack_initialize(FledastyStack *new_stack, const size_t element_byte_size) {
+FledastyError fledasty_stack_initialize(FledastyStack *new_stack, void *values, const size_t values_size, const size_t element_byte_size) {
     if (new_stack == NULL) {
         return FLEDASTY_ERROR_INVALID_POINTER;
     }
 
-    new_stack->size = 0;
-    new_stack->capacity = 10;
     new_stack->element_byte_size = element_byte_size;
+    if (values == NULL || values_size == 0) {
+        new_stack->size = 0;
+        new_stack->capacity = 10;
 
-    new_stack->buffer = (unsigned char*)hallocy_malloc(new_stack->capacity * element_byte_size);
-    if (new_stack->buffer == NULL) {
-        return FLEDASTY_ERROR_FAILED_ALLOCATION;
+        new_stack->buffer = (unsigned char*)hallocy_malloc(new_stack->capacity * element_byte_size);
+        if (new_stack->buffer == NULL) {
+            return FLEDASTY_ERROR_FAILED_ALLOCATION;
+        }
+    } else {
+        new_stack->size = values_size;
+        new_stack->capacity = values_size + (values_size / 2);
+        
+        new_stack->buffer = (unsigned char*)hallocy_malloc(new_stack->capacity * element_byte_size);
+        if (new_stack->buffer == NULL) {
+            return FLEDASTY_ERROR_FAILED_ALLOCATION;
+        }
+
+        hallocy_copy_memory(new_stack->buffer, values, values_size * element_byte_size);
     }
 
     return FLEDASTY_ERROR_NONE;
diff --git a/Tests/Main.c b/Tests/Main.c
index 933fd43..8a4b193 100644
--- a/Tests/Main.c
+++ b/Tests/Main.c
@@ -46,7 +46,7 @@ int main() {
     fledasty_queue_destroy(&test_queue);
 
     FledastyStack test_stack;
-    fledasty_stack_initialize(&test_stack, sizeof(int));
+    fledasty_stack_initialize(&test_stack, (int[]){ 11, 12, 13, 14, 15 }, 5, sizeof(int));
 
     for (int i = 0; i < 10; i += 1) {
         fledasty_stack_push(&test_stack, &i);