Tighten

Hal Stewart, later known as Tighten, is the main antagonist of Megamind. He was Roxanne Ritchi's assistant and secretly harbored a crush on her, and was later given super-powers by Megamind, who trained him to be Metro City's new protector after Metro Man seemingly died. However, after roxanne rejected him he decided to defect to evil. He is voiced by Jonah Hill.

Megamind
Hal first appears during a camera shooting with Roxanne. He then tells her that if he were a super-hero, Megamind, Metro City's super-villain, would never succeed in kidnapping her. Moments later, Megamind's henchman Minion kidnaps Roxanne, much to Hal's horror.

Shortly afterwards, Megamind apparently kills Metro Man and takes over the city. However, Hal was not distressed over Metro Man's apparent demise. At some point, Megamind became bored at having nobody to fight after he defeated Metro Man, so he created a serum with Metro Man's DNA to give somebody elseMetro Man's superpowers so he could protect Metro City. However, at some point, Roxanne confronted Megamind, and in the ensuing struggle, the gun containing the serum was shot through a pipe and struck Hal, which gave him Metro Man's superpowers.

Megamind and Minion donned new disguises and informed Hal that they were his Space Dad and Space Step-mom. The two then trained Hal to use his super powers so he could one day battle Megamind, and gave him to alias of Titan, though Hal mispronounced it Tighten. However, Hal started to show phsycotic behaviour, such as melting a wax Megamind figure with sadistic glee. Also, Hal mainly agreed to become a super-hero so Roxanne would date him.

One night, Hal revealed himself to Roxanne, and deliberately endangerd her life so he could "save" her. However, to his anguish, Roxanne refused to date him. Shortly afterwards, he witnessed Roxanne dating Megamind disguised as Bernard. At this, Tighten decided to denounce his super-hero status and instead opted to be a super-villain, stealing several items for fun. At the same time, Megamind was discovered to be Bernard by Roxanne, leading her to dumb him. A dejected Megamind then vowed to battle Tighten, and appeared in a giant robot suit, challenging him to battle. However, Tighten refused to appear.

Furious, Megamind confronted Hal at his apartment, where Tighten revealed he wished to team up with Megamind to rule the city. A horrified Megamind then revealed that he had decieved Hal and was really his Space Dad, and then revealed he had been dating Roxanne under the guise of Bernard. An enraged Hal then attacked Megamind, leading to a battle throughout the city. Eventually, Tighten gained the upper hand and destroyed Megamind's robot suit. However, in his rage, he tried to murder Megamind, but only succeeded in driving him off. Initially, the city rejoiced that Tighten had "saved" then from Megamind, but he then revealed his intentions of controlling Metro City, and went on a rampage.

Megamind and Roxanne then ventured on to find Tighten's weakness, and in the process discovered Metro Man, who had faked his death so he could be a musician. Metro Man refused to return to fight Tighten, and a distressed Megamind turned himself over to jail, leaving Roxanne to confront Tighten. However, Tighten took Roxanne hostage and ordered Megamind to come and fight him. Megamind, upon seeing Roxanne in danger, complied and he and Minion went off to battle him.

Minion disguised himself as Megamind and attempted to save Roxanne, but his armor was pierced by a building thrown by Tighten. Tighten then proceeded to try and kill Roxanne, but the real Megamind appeared in disguise as Metro Man. Horrified, Tighten attempted to flee, and "Metro Man" ordered Tighten to leave the city. However, Tighten noticed that "Metro Man" Had pronounced Metro City as "Metrocity", which only Megamind did, and returned to attack Megamind.

During the fight, Megamind gained the gun needed to depower Tighten, but he was violently tossed into the air. With Megamind temporarily dealt with, Tighten turned his attention to Roxanne and tried to incinerate her with his heat vision. However, Megamind landed in front of him and successfully depowered Tighten, returning him to his original state. Hal was then imprisoned in jail.