@Damage Lucanus cervus is cool. Male have large mandibles.
https://upload.wikimedia.org/wikipedia/commons/e/e2/Lucanus_cervus_m1.jpg
check more wikimedia images:
https://commons.wikimedia.org/wiki/Category:Lucanus_cervus_(male)
https://commons.wikimedia.org/wiki/Category:Lucanus_cervus
@eptf awesome, thank you :) looks like there are some colourful varieties so i will have a google around!