The Flash Season 2: 28 Easter Eggs & References You Might've Missed
13. Elsa
Doubling down on Cisco's movie references, he definitely deserves praise for saying what we were all thinking, and calling Killer Frost "Elsa."
A reference, as if it needs explaining, to Disney's Frozen, it actually makes a lot of sense considering that Frost's powers basically make her an evil version of Queen Elsa.
It's just a shame that, with Frost struggling with Deathstorm's demise, he didn't tell her to Let It Go.
For the hat-trick of Cisco movie references in Escape from Earth-2, he also refers to the location of Zoom's lair as the "Cliffs of Insanity," a reference to The Princess Bride.