The map on Allegra's tablet shows that Central City is in Missouri, Opal City is in Illinois, and Metropolis in New York, near to or in place of Kansas City, Chicago and NYC, respectively.
Lowest rated episode of the series.
While still performing Ultraviolet, Alexa Barajas no longer provides the voice. Instead, Erika Soto starts voicing Ultraviolet.
When Chillblaine first appeared, he was distinctly a normal person using technology to give himself ice powers. Now it seems as though he's a full-on meta, despite Frost herself saying he wasn't a meta a few episodes ago.
"Rayo de Luz" is Spanish and translates to "Ray of Light."