Floshell

Floshell (フロシェル) are a family of viruses from Mega Man Battle Network. They resemble a mechanical lizard except the tail (wherein they have two antenae portruding upwards). These viruses also have a shield throughout the battle, which makes them invulnerable to attacks. However, when the shield takes substantial damage, it gets knocked upwards, exposing the virus and giving the player a chance to strike before it lowers it again. The viruses attack by launching cannonball towards the player. Unlike the HardHead's cannonballs, however, these do not break panels. Stronger variants of this virus can withstand more damage to the shield before it raises, and can launch more cannonballs at one time, making their attacks very difficult to dodge.

Floshell
Floshell are machine cannons on four legs with two antennas. They are pink in color with a grey shield.

Floshell 2nd
Floshell 2nd are machine cannons on four legs with two antennas. They are tan in color with a red shield.

Floshell 3rd
Floshell 3rd are machine cannons on four legs with two antennas. They are whittish in color with a yellow shield.

Battle Chips
Iron Shield, known as Metal Shield (メタルシールド) in Japan, is the Battle Chip dropped by Floshell.

Trivia

 * Interestingly, whether by coincidence or by choice of the programmers/game planners, the possible chip codes for the chips dropped by Floshell spell out "ABORT".