Lizard

The Lizard is the alter ego of Curt Connors. As a human, he is a S.H.I.E.L.D. scientist working on many advanced technologies.

Physical appearance
He is a Caucasian man and wears a S.H.I.E.L.D. uniform with a lab coat. He has brown hair and blue eyes. He has two complete arms instead of one. But he lost his right arm when debris fell on it, because of the goblin who attacked the Helicarrier.

Personality
He loves to make inventions based from anything or anyone, creating new weapons and technologies for S.H.I.E.L.D. He's inspired to build new inventions based from others like Spider-Man.

History
When Spider-Man received a tour around the S.H.I.E.L.D. Helicarrier from Fury, Curt Connors showed up to reveal that he worked on several Spider Gadgets he had been working on. He showed the Spider-Cycle and gave it to Spider-Man for a ride.

After Spider-Man was rescued by S.H.I.E.L.D., he brought a piece of Doctor Octopus' tentacle with it, which made Curt enthusiastic of its technology.

After S.H.I.E.L.D. raided one of Doctor Octopus' secret labs, Connors discovered a stash of mutagenic animal DNA Octavius planned to use to develop super-powered individuals. Dr. Connors planned to use this DNA for a different purpose - restoring human bodies. Namely, regrowing his own arm after losing it when Goblin attacked the Helicarrier.

Ignoring Spider-Man's warning about using it for such purposes, Connors took a serum of lizard DNA, growing back his lost arm. While it initially gave him great strength, Connors soon lost control of his mutation, transforming into a giant lizard creature. Spider-Man, with the help of his teammates and Dr. Octopus, was able to put an end to the Lizard's rampage, transforming him back into Doctor Connors.

Otto later captured the doctor and used a special device to control him as the Lizard and made him part of the Sinister Six. Spider-Man eventually caused Connors to resist the control and he forced Otto to the ground. However, the Lizard managed to escape into the sewers.

As Connors

 * Genius-level intellect

As Lizard

 * Superhuman Strength
 * Superhuman Speed
 * Superhuman Stamina
 * Superhuman Durability
 * Superhuman Agility
 * Superhuman Reflexes
 * Regenerative Healing Factor

Appearances

 * 102. "Great Responsibility"
 * 112. "Me Time"
 * 114. "Awesome" (flashback)
 * 117. "Snow Day" (cameo)
 * 122. "The Iron Octopus"
 * 126. "Rise of the Goblin"
 * 201. "The Lizard"
 * 206. "The Sinister Six"

Background in other media

 * In the comics, Curt Connors didn't work for S.H.I.E.L.D. and missed an arm, he used a formula to re-grow his arm, but took side effect that changed him into a lizard and became known as the reptilian supervillain of Spider-Man, the Lizard.
 * This is the fifth animated appearance of Curt Connors. Previous versions includes Spider-Man (1967), Spider-Man: The Animated Series, Spider-Man: The New Animated Series and The Spectacular Spider-Man.
 * Dee Bradley Baker reprises his role form the previous show