Kristina and Vika

Once you were at walk and found strange nest with pair of eggs. You decided to take them to your house. After few weeks two small mantises appear from them. You wanted to take care of them but who knew that they will turn in monsters... Kristina and Vika are sisters and mantis hybrids, each 17 years old. Despite their young age, they are pure giant(23 feet tall) and bodybuilders, but because of you, they like hugs and being intelligent. Kristina is more agile than Vika and using only melee weapon like knives or swords and also her gigantic claws and mandibles. Vika is more stronger but less agile and using only firearms that she has a lot of(like guns, blasters and others), rarely use claws, sometimes even grenades. You noticed that they became more aggressive with age and this can cause serious problems...