Zetzilla

16th - Zetzilla Pearl
17th - Congratulations! You found the 'Zetzilla' Hidden Avatar!
30th - Memoirs of a Monster
39th - Zetzilla Pearl
49th - Zetzilla Stamp
54th - Zetzilla Pearl
67th - Zetzilla Cookie
96th - Zetzilla Potato
102th- Zetzilla Cookie
131th- Memoirs of a Monster
136th- Zetzilla Plushie
138th- Zetzilla Trading Card
141th- Zetzilla Cookie
156th- Zetzilla Plushie
162th- Zetzilla Pearl
171th- Memoirs of a Monster