Secret Agent 23 Skidoo, a pioneer in the child-friendly hip-hop known as kid-hop, returns with old school funk on the 16-track Underground Playground. Agent 23 Skidoo honors hip-hop heritage, adds fresh beats and mixes in the magic of childhood.
—Myles McDonnell of You Know, For Kids praised Agent 23 Skidoo’s lyrics, which “convey positive messages on subjects like friendship (‘Secret Handshake’) and honesty (the Public Enemy–tinged ‘Speak the Truth’) without ever getting finger-waggy, or losing the loose sense of fun that’s the core of so much quality hip-hop.” The positive lyrics are paired with “top-notch, catchy and addictive” beats.
— Toni Morton of Toni’s Treehouse tells kid-hop doubters to “think again, because Skidoo can absolutely hold his own, even while throwing out verses designed for a younger audience.” Overall, “Skidoo is a strong rapper, his rhymes are solid, the music is catchy, the stories are great, he has a good sense of humor and we love to hear something other than rock or country for kids.”