- Karina, Freya, and Zilong have 5 skins.
- Selena and Karina are sisters, Karina being the eldest of the two.
- Karina, Martis, Gatotkaca, Saber, and Fanny wield dual weapons. She wields two double-bladed swords.
- Lapu-Lapu is counted as having dual weapons, but also having his Heavy Blade.
- When Miya, Franco, Eudora, Hayabusa and her had their model reworked, they kept the old designs for their complimentary skins but the entry animation of the complimentary skins were changed like the new default skins.
- Her name is a variant of another feminine name, Carina, which is of Latin origin and means "Beloved".
- When, killed Karina has no death quotes nor does she make any moaning. She is the only hero not to have one.
- Some of her quotes are taken from the hero Seeley from Magic Rush.