I had Shadowless and thought that was the new rank before it updated to Surprise Zombie. Though I think Zombie was before Shadowless.
Info - Rank Ladder Requirements and Different Versions Rank Requirement Thriller Bark Kingdom My Hero Academia Rank 1: 0 Trophy Points Just Reborn - Basic Zombie Soldier - Kou Innocent - Eri Rank 2: 500 Trophy Points Vampire - Hildon Squad Leader - Bihei Thug - Muscular Rank 3: 1000 Trophy Points Zombie - Mocdonalds 100-man Commander - Shousa... thrillerbark.com