Recon Mechs are enemies in Mother 3. They can be found in Osohe Castle after the Pigmask Army invades it. They are not suited for battle per se, and are used primarily for patrol purposes. However, they can sound an alarm to get the attention of nearby Pigmasks.
His battle sound is Battle Sound 3 which falls under Code Numbers 445 for regular attack, 446 for Smaaaash! and 447 for Miss. However, because he never uses regular attacks that play a battle sound on his own, Kumatora must use Brainshock on it to get it to use a regular attack.