Diane Amara

Liv Amara is the Main Antagonist of the City Of Monsters Arc of Season 2 in Big Hero 6: The Series she first appears in "Big Problem", she is the rich founder of Sycorax a biotech company, she initially appears as a normal person she secretly partakes in secretly mutating people into monsters, posing a huge threat to San Fransokyo

Background
Live was an extremely successful person at a young age, she eventually created the company Sycorax Liv Amara is one of San Fransokyo's most renowned billionaires (along with Alistair Kreil). Her expertise is biotech, but secretly Liv aided by her assistant Chris. are mutating people starting with Orso Knox to run rampant in San Fransokyo to gain more money through investments

Season 1
her first appearance was in "Big Problem" as she appears as a special guest at SFIT liv is funding the schools new biotech lab which is also going to be named after her.

along the way she meats Karmi a biology student at SFIT Liv Amara immediately takes a liking to Karmi and hit off almost right way and they spend the day together.

At the gala commemorating the new biotech building, Liv dedicates her speech to Karmi. Midway through, however, she is attacked by a Monster who is Orso Knox (who she created). Karmi uses her invention to defeat Knox before any true damage can be done, further impressing Liv. With Knox sedated, Liv offers to take the monster to her genetics lab and have her team work to save him.

she makes a minor appearance in "Countdown to Catastrophe" where she is attending SFIT open house where she mostly is with Karmi when Honey Lemon starts showing off Lenore Shimamoto recording she along with everyone else learn that she caused Great Catastrophe looking as surprised as everyone else

Season 2
in the first episode of Season 2 "Internabout" she appears having just taken Karmi in as an intern she gives Professor Granville, Honey Lemon, Go Go, Wasabi, and Hiro a tour company headquarters for a tour in support of Karmi's latest achievement.

her first villainous appearance is in "Seventh Wheel" where she forms an alliance with Momakase where she promises to pay her a lot of money in return for an I"investment" in her company. Momakase agrees, and at the Sycorax lab, Liv implants a chip into Momakase that mutates her body. Momakase takes advantage of this transformation at a dinner of which Liv is in attendance. Despite Big Hero 6's attempts to thwart Momakase, Liv's involvement goes undetected by the team. in "Something's Fishy" in "Nega-Globby" she tries to create a globby like Villa, she sends her assistant Chris to steal the part of, the part of Globby that Honey Lemon was experimenting on, once she gets it she does create a Globby like monster but realizes that the thing is two wild and out of control so she scraps the idea and leaves it to the city to deal with it. in "The Fate of the Roommates" she appears at the end of the episode where Mr. Sparkles promises to invest in her company as he heard that she can create monsters, where she smiles presumably agreeing

Personality
Live Amara initially to be Kind Friendly person who is with her paying her employees incredibly well

but this was all a ruse in secret Liv is Corrupt Greedy Power-Hungry businesswomen who is willing to use any means necessary to get investors to invest in her company by luring them. and implants a chip in them that forces them to become monsters and then Blackmails them.

Powers and abilities

 * Her Mutator: it is able to implant a chip into anyone where Liv is able to turn them into a monster at will