Topera

Topera is a mouse that enjoys exploding things. He first appears in Chapter 3 Part 15, when he destroyed the Winchester. He has a twin brother named Brothepa. He appears again in Chapter 3 Part 23, teaming up with Busal to destroy the world. However, they later decide to find out who is altering the timeline of NES.

Things he destroyed

 * The Winchester
 * The Winchester 2.0
 * The corner of LAB-629A
 * The core of Lab-629A
 * Cubic Earth