Solution

The first names of each of these fictional characters are also words or names in KTANE modules. The first letters of those KTANE modules spell out the solution.

Character names		Module	Letter
Elsa (Frozen)	Spike (MLP:FiM)	Schlag den Bomb	S
Rocket (GotG)	Archer (Pokémon)	Word Scramble	W
George (The Jetsons)	Jessica (Roger Rabbit)	Ice Cream	I
Venom (Spider-Man)	Brain (Pinky & The Brain)	Tap Code	T
Tom (Tom & Jerry)	Harry (Harry Potter)	Cooking	C
Elliott (Pete’s Dragon)	Ursula (The Little Mermaid)	Human Resources	H
Indigo (Arrowverse)	Violet (The Incredibles)	Extended Password	E
Bryan (Tekken 3)	Mike (Monsters, Inc.)	Subways	S

SWITCHES