BoBoiBoy was first able to fuse into Supra after he was able to take back all his elemental powers from Retak'ka with Ochobot's help. After using another fusion, BoBoiBoy Glacier, to prevent a dam from flooding, building on his rage, BoBoiBoy called Thunderstorm and Solar to fuse into Supra. Supra decimated Retak'ka, shooting him up into space with a powerful laser beam. After the attack, exhausted BoBoiBoy reverted back to his original form and fell off the cliff into the icy cold water.
Supra contains colors and motifs of both Thunderstorm (red and black) and Solar (yellow and white). He wears a jacket similar to Solar's, though is adorned with both yellow and red accents, representing the two elements. He wears a black turtleneck underneath his vest, which is partially zipped up. Supra wears tan brown pants, where two belts, one yellow and one red, crisscross at the center.
Supra's cap is white with Thunderstorm's red electricity patterns, with a black-colored spine. He adorns Solar's sunglasses, though it is tinted both red and yellow. He summons two sickle weapons, with a white hilt and red blade. There is a yellow lightning bolt on the handle.
Supra is an incredibly powerful form, combining BoBoiBoy's already powerful forms, Thunderstorm and Solar. Supra is able to move quickly by blinking around the battlefield, attack with his sickle-like sword. He is also able to summon powerful lasers.
- Supra Shift (Gerakan Supra): Supra blinks quickly across the battlefield, a combination of Thunderstorm and Solar's speed. The movement is very fast to confuse the enemy to know where he will attack.
- Supra Sickles (Pedang Sabit): He has a sickle looking sword (refer to solar eclipse) that forms from the power of solar and thunderstorm. Two swords can also be merged similar to Solar Eclipse Attack.
- Super Supra Blast (Tembakan Super Supra): He also has a strong attack that threw Retak'ka from Earth's atmosphere. The blast caused a massive explosion and shockwave in space.
- BoBoiBoy Supra has both First and Last references. This refers to the fact, that Thunderstorm is the first Tier 2 Elemental Evolution, and Solar is the last Tier 2 Elemental Evolution.
- BoBoiBoy Supra is the first Elemental Form who does not have a name that relates to the elements involved. The word supra means 'beyond' or 'transcending', referring to the fact that Supra is likely BoBoiBoy's strongest form.
- While Supra's name isn't related to an element, it can be assumed that Supra's element is "Laser" based on how it was made from Light and Thunderstorm and the effects and motif of his attacks