The Mermaid Man & Barnacle Boy Trading Card # 54 is a highly rare edition Mermaid Man and Barnacle Boy card that is animated. There are now only four in existence.
On the card, there is an animation of Mermaid Man saying "Mermaid Man says..." (a giant hand punches Barnacle Boy) "...Buy more cards!'
Role in series
It appeared in "The Card" when the cashier said there were only five of the cards in existence. Patrick bought a packet, and it had all five of them. Ironically, SpongeBob bought every pack in the store, except for that one. Patrick said that he would give it to SpongeBob, if he could use it for the rest of the day. Patrick used it for things such as: a key, grilling, and floss which freaked out SpongeBob as there were only five in existence. He also thought that if it broke, Mermaid Man and Barnacle Boy would never forgive him. When SpongeBob got it, it was all worn out and he started to cry. Patrick then gave SpongeBob the four other limited edition copies.
When the cashier said there were only five in the world, it is a parody of Willy Wonka and the Chocolate Factory when Willy Wonka only put five golden tickets around the world.
There are now only four cards left in existence, all of which are now owned by SpongeBob.