Explo presumably gets a text from his super-villain support group (which at least consists of Onibo, Brimstone, Malice, Vibro and Grasshopper Girl) that they should target Coco. After being buried in a collapsed building, Coco stumbles out of the rubble. At that moment, Explo tosses a bomb in his direction, and hides around the corner as it explodes in Coco's face. (Coco the Indestructible Coconut #1, Feb 2018)
In the Initial Era, Explo first appears in D.O.P.E. Volume 1, Number 14 (1995). He attacks the D.O.P.E. building with a stick of dynamite. Big Mouth comes out to fight him, but when he realizes that Explo has live dynamite, he runs back into the building scared. Meanwhile, Leper's hands put out the lit stick, and his foot kicks Explo in the face. As Pinhead is taking him away, Explo says that they're irritating him and he has a short fuse. After a stunning silence, Pinhead responds, "Boy did that joke bomb!"