- 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.
- Her Starlight Skin has a hidden message in her entry animation in connection to Bane's Count Dracula Skin
- Her name is a variant of another feminine name, Carina, which is of Latin origin which means "Love".
- When killed, Karina doesn't make any moaning or any dialogue at death and is the only hero to not have any death dialogue/moans.
- Some of her quotes are taken from the hero Seeley from Magic Rush.