Protecto

Protecto is a virus from the Mega Man Battle Network 2 game. They never appear alone and they all need to be destroyed at the same time in one hit, otherwise, their HP restores back to their original amounts. This is where PAs come in handy. There is a countdown timer on this virus starting at 10. When the timer reaches 0, the virus attacks with a field-wide explosion attack, dealing a total damage equal to one of the virus's HP. After the attack, the countdown resets back to 10 and starts over. These viruses appear in specific locations of the Secret Areas, usually blocking a way towards a boss or an item. They also always appear in threes of one variant and never mixed with any other virus. Upon their deletion at the specific locations, they never reappear again.

Protecto
 Protecto s have dark-red properties.

Protecto2
 Protecto2s have orange properties.

Protecto3
 Protecto3 s have light-blue properties.