Though he resembles a large dog, Kritter is in fact a mutated human, a victim of the prenatal experiments of Dr. Amos Love. He was raised in secret by Dr Love along with the other five children who would eventually become the supervillain team Helix. Kritter is a scientific genius, and eventually designed a device to convert his doglike barks into human speech. He and his teammates fought Infinity Inc several times, but Kritter has dropped out of sight since Helix disbanded.