While this boss is not able to move fast, it has a hefty amount of health and is able to shoot an arc of 10 balls at characters within its range, making it hard for an inexperienced team to conquer this boss. Many attempt to use one ranged character to fire a few shots before moving out of the way of the Grey Boss Smiley's projectiles. This method is time consuming, but it will eventually bring the Boss down. A Sniper/Magician focused purely on STR will be able to fire outside its range or at least minimize damage taken due to the spreading projectiles, making this a good tactic for fighting this boss. Without STR, the Triple Shot is highly effective in killing the boss for inexperienced parties as it outranges it even without STR investments, and can be obtained from previous Red Smiley Walkers.
The Bait strategy is also useful when taking this boss, especially when the bait is a melee character as the melee character would be targeted anyway due to their low range. A White Stone is also useful to allow characters to take more hits before they die. Players should avoid letting inexperienced melee characters fight this boss head-on, since they will take most of the damage from the spread attack of the boss. It is the first enemy in the game to both have multiple attack projectiles and drop medals.
A stronger version of this boss, the White Boss Smiley Walker, can be found in Cavern 1. That boss has more LP and an increased AT. In addition, the pellets from that boss can roll on terrain.