Yup! It was Chesnaught! The wonderful marttinpalomo again guessed it!
Riddle:
Strong at day, even more stronger at night
I'm a dark type Pokémon that you'll really love
I'm not a fairy type Pokémon, I'm just strongBite at level 20, attack is always highly
I have a mega evolution that will make you amaze.
I sense incoming disasters
And only appears before people only to warn them of impending danger...*~*~*
Hope y'all like it!!!