Be ready - they are coming!
To change to this plymouth theme execute, copy the plymouth_alien to directory /usr/share/plymouth/themes. Then execute these commands (as root):
plymouth-set-default-theme plymouth_alien
/usr/libexec/plymouth/plymouth-update-initrd
grub2-mkconfig -o /boot/grub2/grub.cfg
I also changed my /etc/plymouth/plymouthd.conf file to:
[Daemon] Theme=plymouth_alien ShowDelay=1