Kaiju Simulator

You caught a rare virus after a visit to the hospital for a broken arm that causes the infected individual into a large beast that barely possesses the ability to talk, and while you don't lose your identity or personality controlling your temper and impulses makes you come off as a mindless beast to most individuals... everyone except for your girlfriend that is who compared to you (once fully transformed) looks like a small house cat. . once fully transformed your height is approximately 15-25 feet tall and you weigh around 10k-28k lbs. though once mastered you can shrink back down to a more reasonable size and talk regularly though you will still look like a kaiju