Some talking about sexual education. (e.3)

In many cases Rex is talking about Dr. Holiday that she is looking good. He is also making some mild sexual references when they are together.

2 or 3 kisses are not completed. One kissing scene. (e.36)

Shapes of female breasts are shown better than any other animated TV series for children. Though it is animated, nothing straight sexual.

In most of the episodes the action is non-stop. Several soldiers are punched and beaten by evos. Sword fights, gunfights, fistfights throughout the series.

When Rex fights against evos he uses various ways to defeat them.

Missiles are launched.

There is no gore.

In 'Leader of the Pack' some blood is visible in Van Kleiss' mouth. (e.7.) Pain is shown on the faces of the characters.

Freakin' is said once in episode two ("no freakin' duh")

Some mild swear words like hell and damn are used infrequently

Dirty evo is said a few times. Freak is said once. (e.7)

Haven't noticed anything.

The fights are intense and long.

Evos can be frightening sometimes.

During the dream of Rex we see a lot of strange and frightening creatures and we hear disturbing music.

The main villains can be disturbing (Van Kleiss, Hunter Cain, NoFace)

Action violence, difficult science themes and frightening scenes.