Click to expand Tap to zoom Hey Arnold Playing Cards by nickelodeon Sale $11.99 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Life in the big city isnÍt always easy when youÍre a football-headed 4th grader named Arnold. This officially-licensed deck of playing cards features Arnold and his friends, Gerald and Helga.