diff --git a/lib/hkStubs/CMakeLists.txt b/lib/hkStubs/CMakeLists.txt
index 111b289a..bc285121 100644
--- a/lib/hkStubs/CMakeLists.txt
+++ b/lib/hkStubs/CMakeLists.txt
@@ -7,6 +7,7 @@ add_library(hkStubs OBJECT
   Havok/Common/Base/Container/Array/hkArray.h
   Havok/Common/Base/Container/Array/hkArrayUtil.h
   Havok/Common/Base/Container/Array/hkSmallArray.h
+  Havok/Common/Base/Container/String/hkString.h
   Havok/Common/Base/Container/String/hkStringPtr.h
 
   Havok/Common/Base/DebugUtil/MultiThreadCheck/hkMultiThreadCheck.h
diff --git a/lib/hkStubs/Havok/Common/Base/Container/String/hkString.h b/lib/hkStubs/Havok/Common/Base/Container/String/hkString.h
new file mode 100644
index 00000000..e40484d3
--- /dev/null
+++ b/lib/hkStubs/Havok/Common/Base/Container/String/hkString.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <Havok/Common/Base/Types/hkBaseDefs.h>
+#include <Havok/Common/Base/Types/hkBaseTypes.h>
+
+namespace hkString {
+
+int strCmp(const char* s1, const char* s2);
+hkBool beginsWith(const char* str, const char* prefix);
+hkBool endsWith(const char* str, const char* suffix);
+
+}  // namespace hkString
diff --git a/lib/hkStubs/Havok/Common/Base/Container/String/hkStringPtr.h b/lib/hkStubs/Havok/Common/Base/Container/String/hkStringPtr.h
index 35fabb72..153df4b3 100644
--- a/lib/hkStubs/Havok/Common/Base/Container/String/hkStringPtr.h
+++ b/lib/hkStubs/Havok/Common/Base/Container/String/hkStringPtr.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <Havok/Common/Base/Container/String/hkString.h>
 #include <Havok/Common/Base/Memory/Router/hkMemoryRouter.h>
 
 class hkStringPtr {
@@ -11,12 +12,32 @@ public:
     };
 
     hkStringPtr();
+    hkStringPtr(const char* string);  // NOLINT(google-explicit-constructor)
+    hkStringPtr(const char* string, int len);
+    hkStringPtr(const hkStringPtr& strRef);
     explicit hkStringPtr(hkFinishLoadedObjectFlag f);
 
+    ~hkStringPtr();
+
     inline const char* cString() const;
-    inline operator const char*() const;
+    inline operator const char*() const;  // NOLINT(google-explicit-constructor)
 
     hkStringPtr& operator=(const char* s);
+    hkStringPtr& operator=(const hkStringPtr& s);
+
+    int getLength() const;
+
+    inline char operator[](int idx) const;
+
+    void printf(const char* fmt, ...);
+    void set(const char* s, int len = -1);
+    void setPointerAligned(const char* s);
+
+    inline hkBool32 operator==(const char* s) const;
+    inline hkBool32 operator!=(const char* s) const;
+    inline hkBool32 startsWith(const char* s) const;
+    inline hkBool32 endsWith(const char* s) const;
+    inline int compareTo(const char* rhs) const;
 
 private:
     const char* m_stringAndFlag;
@@ -29,3 +50,34 @@ inline const char* hkStringPtr::cString() const {
 inline hkStringPtr::operator const char*() const {
     return cString();
 }
+
+inline char hkStringPtr::operator[](int idx) const {
+    return cString()[idx];
+}
+
+inline hkBool32 hkStringPtr::operator==(const char* s) const {
+    return compareTo(s) == 0;
+}
+
+inline hkBool32 hkStringPtr::operator!=(const char* s) const {
+    return compareTo(s) != 0;
+}
+
+inline hkBool32 hkStringPtr::startsWith(const char* s) const {
+    return hkString::beginsWith(cString(), s);
+}
+
+inline hkBool32 hkStringPtr::endsWith(const char* s) const {
+    return hkString::endsWith(cString(), s);
+}
+
+inline int hkStringPtr::compareTo(const char* rhs) const {
+    const char* lhs = cString();
+    if (lhs && rhs)
+        return hkString::strCmp(lhs, rhs);
+    if (lhs != nullptr)
+        return 1;
+    if (rhs != nullptr)
+        return -1;
+    return 0;
+}
diff --git a/lib/hkStubs/Havok/Common/Base/Types/hkBaseTypes.h b/lib/hkStubs/Havok/Common/Base/Types/hkBaseTypes.h
index 8b4ab3c6..71638a1d 100644
--- a/lib/hkStubs/Havok/Common/Base/Types/hkBaseTypes.h
+++ b/lib/hkStubs/Havok/Common/Base/Types/hkBaseTypes.h
@@ -75,6 +75,9 @@ private:
     hkInt16 m_value;
 };
 
+using hkBool32 = hkUint32;
+using hkBoolLL = hkUint64;
+
 class hkBool {
 public:
     HK_ALWAYS_INLINE hkBool() = default;
@@ -82,6 +85,8 @@ public:
     HK_FORCE_INLINE constexpr hkBool(bool b) : m_bool(static_cast<char>(b)) {}
 
     HK_FORCE_INLINE constexpr explicit operator bool() const { return m_bool != 0; }
+    // NOLINTNEXTLINE(google-explicit-constructor)
+    HK_FORCE_INLINE constexpr operator hkBool32() const { return m_bool != 0; }
 
     HK_FORCE_INLINE constexpr hkBool& operator=(bool e) {
         m_bool = static_cast<char>(e);
@@ -95,9 +100,6 @@ private:
     char m_bool;
 };
 
-using hkBool32 = hkUint32;
-using hkBoolLL = hkUint64;
-
 /// For storing an enum with a particular storage size when specifying the underlying type of the
 /// enum is not an option.
 template <typename Enum, typename Storage>