18 to 21: Search around internet like a blitz.
21 to 24: Exercise, both physically and mentally.
0 to 3: Direct and amplify a searchlight.
3 to 6: Forecast about cyclones twice.
6 to 9: Watch the sunrise.
9 to 12: Check his refrigerator.
12 to 15: Set mouse traps on the 1st floor.
15 to 18: Copy a horror movie.
What is the full name of Mr.X?
Subtle Hint:
The list is cyclic, but it must be in order.
Moderate Hint:
Mr.X has "no" partner.
Decisive Hint:
Mr.X's name is literally "X".