An unnamed adult who feels confined within a polluted, industrial world characterized by black smoke and bending asphalt streets. They recognize their loss of childhood imagination and actively seek a return to a simpler, more creative state of being. Though restricted by their adult perspective, they maintain hope of finding this magical threshold by trusting the wisdom of younger generations.

Youthful figures who inherently know the way to the secret place beyond the sidewalk. Unburdened by the dark realities of the adult world, they use white chalk to leave temporary signs for others to follow. They represent pure creativity and hold the necessary knowledge to cross the boundary into the imaginative space.

The silent companion invited by the speaker to leave the city behind and walk toward the edge of the sidewalk. They represent the audience of the poem, positioned as someone who also needs to escape the treacherous, winding roads of adult life. The speaker asks them to adopt a slow, measured walk to properly make the journey.

A mysterious, celestial creature residing in the idyllic space where the sidewalk ends. It exists in harmony with the crimson sun and white grass, enjoying the fresh air of this unknown location. The creature acts as a symbol of the limitless, illogical possibilities found outside the normal confines of human reality.