Who is Gladiola? Chapter 12

Gladiola is a pink poodle.

Grover explained that he'd come across Gladiola in the woods and they'd struck up a conversation. The poodle had run away from a rich local family, who'd posted a $200 reward for his return. Gladiola didn't really want to go back to his family, but he was willing to if it meant helping Grover.