Invincibubble's appearance differs from that of SpongeBob. He has a muscular body and slightly longer legs, while his head and pants remain the same size. He also wears a blue mask with a bubble wand. He also has five fingers on each hand, instead of four like in the series.
Invincibubble can use his "wand" on top of his head to blow bubbles, as the "wand" has the advantage to cover the items.
The strength of his bubble blast is so strong that he can use it to fly through the air, while carrying somebody.
The bubbles can also be condensed and used as physical projectiles that inflict major damage on opponents.
Invincibubble is always happy, friendly, smart, and excited to be a part of a team, which is the main point of The SpongeBob Movie: Sponge Out of Water. He teaches Plankton about teamwork and also teaches him how to say the word, but when they are on an adventure, he is intelligent.
Invincibubble's body bears a slight resemblance to SpongeBob's muscular body seen in "MuscleBob BuffPants."