The Test Kids

The Test Kids consisted of Johnny Test, his pet kangaroo Roo, his pet elephant Lumpy, and his sisters Susan Test and Mary Test.
 * 1) Johnny Test (Hugh and Lila's son.)
 * 2) Susan Test (Hugh and Lila's daughter.)
 * 3) Mary Test (Hugh and Lila's daughter.)
 * 4) Roo (Hugh and Lila's pet kangaroo and one of Susan's brothers.)
 * 5) Lumpy (Hugh and Lila's pet elephant and one of Susan's brothers.)