diff --git a/Source/UI/Lists/UIScrollBar.cpp b/Source/UI/Lists/UIScrollBar.cpp
index eef0dcd3..a9c6523c 100644
--- a/Source/UI/Lists/UIScrollBar.cpp
+++ b/Source/UI/Lists/UIScrollBar.cpp
@@ -4,6 +4,7 @@
 #include "Resource/ResourceMgr.h"
 #include "UI/Window/UIWindowMgr.h"
 #include "UI/Lists/UIScrollBar.h"
+#include "UI/Lists/UIScrollBarVariants.h"
 #include "Contents/Items/ItemDescription.h"
 #include "Resource/TextureNames.h"
 #include "UI/Buttons/UIButton.h"
@@ -44,6 +45,28 @@ UIScrollBar::UIScrollBar(UIWindowContext& windows)
 // OFFSET: 0x00873FA0
 UIScrollBar::~UIScrollBar() = default;
 
+// OFFSET: 0x0086E4D0
+// FUNCTION: fn_11072
+UIScrollBar4::UIScrollBar4(UIWindowContext& windows) : UIScrollBar(windows) {
+  this->thickness = 6;
+  this->arrowLength = 0;
+  this->m_thumbLength = 12;
+}
+
+// OFFSET: 0x0086E630
+// FUNCTION: fn_11074
+UIScrollBar_Custom::UIScrollBar_Custom(UIWindowContext& windows)
+    : UIScrollBar(windows), m_trackTop(nullptr), m_trackMiddle(nullptr), m_trackBottom(nullptr), m_arrowUp(nullptr), m_arrowDown(nullptr),
+      m_thumbTop(nullptr), m_thumbMiddle(nullptr), m_thumbBottom(nullptr) {
+}
+
+// OFFSET: 0x0086F240
+// FUNCTION: fn_11088
+UIZeroQuestScrollBar::UIZeroQuestScrollBar(UIWindowContext& windows) : UIScrollBar(windows) {
+  this->arrowLength = 12;
+  this->thickness = 9;
+}
+
 // OFFSET: 0x00897830
 // FUNCTION: fn_11535
 void UIScrollBar::Resize(int width, int height) {
diff --git a/Source/UI/Lists/UIScrollBarVariants.h b/Source/UI/Lists/UIScrollBarVariants.h
index d24c0fc7..34db0527 100644
--- a/Source/UI/Lists/UIScrollBarVariants.h
+++ b/Source/UI/Lists/UIScrollBarVariants.h
@@ -27,15 +27,16 @@ public:
 
 class UIScrollBar4 : public UIScrollBar {
 public:
+  explicit UIScrollBar4(UIWindowContext& windows);
+
   void Paint() override;
+
+  /* 00B4 */ int m_thumbLength;
 };
 
 class UIScrollBar_Custom : public UIScrollBar {
 public:
-  explicit UIScrollBar_Custom(UIWindowContext& windows)
-      : UIScrollBar(windows), m_trackTop(nullptr), m_trackMiddle(nullptr), m_trackBottom(nullptr), m_arrowUp(nullptr), m_arrowDown(nullptr),
-        m_thumbTop(nullptr), m_thumbMiddle(nullptr), m_thumbBottom(nullptr) {
-  }
+  explicit UIScrollBar_Custom(UIWindowContext& windows);
 
   /* 00B4 */ CBitmapRes* m_trackTop;
   /* 00B8 */ CBitmapRes* m_trackMiddle;
@@ -53,6 +54,8 @@ public:
 
 class UIZeroQuestScrollBar : public UIScrollBar {
 public:
+  explicit UIZeroQuestScrollBar(UIWindowContext& windows);
+
   void Paint() override;
 };