Letter Z

Letter Z is an installment in the Reginald Livingston Seagull series.

Poem
In winter when it's zero, I zoom straight home from play,

But when the springtime sun is bright, I zig-zag all the way!

Appearances

 * Episode 86: Here Come the Aliens/Abiyoyo
 * Episode 125: Roller Coaster/What Do Wheels Do All Day?