How Old Is Kate In Invincible Novels & Stories

Hearing this Kyle honestly wasn't too surprised, Kyle already suspected that, when Rain asked "Can he sleep with Catharine?" "Now she is 18 years old, even turning 19 soon, so you don't need to worry about the issue of dating underage girls." Kyle chuckled, then picked up some apples and ate them. It was Rain's turn to eat the apple." Do you really not mind, if i date your sister? I don't want you to be forced to let me date Catherine."