"Spike is usually easy going. But once he sees Mario he starts throwing spiked balls at him. Spike occassionally appears above ground too."
-Super Mario Bros. 3 Instruction Manual

"Spike attacks by throwing a magical spiked ball at Mario. Duck and cover!"
-Super Mario Bros. 3 Strategy Guide

"These pains-in-the-neck patrol the snow-coverd slopes of World 5"
-Super Mario World 2: Yoshi's Island Player's Guide

"Spits iron balls from its mouth. Jump on it!"
- Spike, Super Princess Peach Glossary

"Jumps angrily and launches iron balls!"
- Mad Spike, Super Princess Peach Glossary

"Snow Spikes can be beaten with a stomp or a fireball..."
- New Super Mario Bros. Player's Guide