Movie
Description
In the film Dragon Ball Z: Battle of Gods, the character Gotrunks is the fused being created when the young half-Saiyan warriors Goten and Trunks perform the Fusion Dance. The name Gotrunks is an alternate localized name for the character more widely known as Gotenks, appearing in specific international versions of the Dragon Ball media.

The background of Gotrunks is rooted in the techniques learned during the battle against Majin Buu. By the time of Battle of Gods, set several years after that conflict, Goten and Trunks have mastered the Fusion Dance, allowing them to reliably create Gotrunks for combat. The fusion results in a single, more powerful warrior who wears the traditional Metamoran vest and pants, a uniform that materializes automatically when the dance is performed successfully.

In terms of personality, Gotrunks is overwhelmingly arrogant, cocky, and prone to showing off. This demeanor is a combination of the worst traits of his two components, taking Trunks's inherited Saiyan pride and mischievous nature and blending them with Goten's childishness and tendency to complain. He is extremely confident in his own power, often to the point of recklessness, and tends to underestimate his opponents. This leads him to treat battles as a form of entertainment or a stage for his dramatic and often ridiculous original techniques rather than serious fights.

Gotrunks's primary motivation in Battle of Gods is to prove his strength. Upon encountering the God of Destruction Beerus, who is attending Bulma's birthday party, Gotrunks does not grasp the true danger. Instead, he sees an opportunity to showcase his abilities and confronts the deity head-on, believing his power will be sufficient. His role in the film's story is therefore to demonstrate the immense gap between the Earth's warriors and the divine level of Beerus. He serves as a comic foil whose overconfidence is swiftly and humiliatingly punished.

Key relationships for Gotrunks are inherent to his existence. His components, Goten and Trunks, share a close friendship and a competitive rivalry, and their synergy directly dictates the success of the fusion. While Gotrunks does not interact heavily with others in the film, his defeat underlines the helplessness of the Z-Fighters against Beerus, setting the stage for the search for the Super Saiyan God.

Regarding development, Gotrunks does not undergo a significant emotional arc in Battle of Gods. His appearance reinforces a character trait established in the Majin Buu saga: his immense potential is consistently undercut by his lack of discipline and his theatrical arrogance. In the film, this leads directly to his defeat, showing that despite his power, his immaturity remains a critical flaw.

Notable abilities displayed by Gotrunks include the standard ki manipulation and flight common to powerful fighters in the series. He is capable of transforming into a Super Saiyan, which greatly amplifies his strength, speed, and energy output. More impressively, Gotrunks can achieve the Super Saiyan 3 transformation. This form, which causes his hair to grow long and his brow to become more pronounced, grants him a colossal increase in power. However, it is a form that is notoriously difficult to maintain and places a heavy strain on the body, consequently reducing the total time he can remain fused. Among his signature techniques is the Super Ghost Kamikaze Attack, where he spawns sentient, glowing ghost-like copies of himself that cackle and fly toward an opponent before detonating on contact. Despite this arsenal, Gotrunks's overconfidence leads him to attack Beerus directly. The God of Destruction effortlessly defeats him with a series of finger slaps, spanking him and leaving Gotrunks crying on the ground, having accomplished nothing. This overwhelming defeat ultimately causes the fusion to time out, separating him back into Goten and Trunks.