List of Johnny Test characters
Just as often, however, Johnny proves himself to be very clever, either by convincing his sisters to help him solve his created problems or by saving the day from whatever good happens to show up.
Dukey will usually behave human-like around Johnny, Mary, and Susan, but will revert to acting like a dog around others, including Hugh and Lila.
On the occasions that Dukey has been seen in public, he dresses up in various clothing and passes himself as Johnny's "hairy friend" or "the kid with the rare hair disorder".
Both twins wear traditional lab coats and harbor a deep love and obsession for the Tests' next-door neighbor, Gil, although their attempts to attract his attention always fail.
Throughout the series, he is portrayed as the disciplinarian of the Test household since, unlike his wife, he has shown to be the one who is more likely to scold and punish his children, mostly Johnny.
Hugh has blond hair, blue eyes and wears a green sweater over a yellow shirt with brown pants and loafers.
Hugh has forced everyone (including his wife) or trick anyone to get his way such as giving up all her phones due to vacationing reasons.
Lila Test (née Little) (voiced by Kathleen Barr) is the mother of Johnny, Susan, and Mary and wife of Hugh.
She has brownish-reddish hair, green eyes (later cyan blue), and wears a typical women's work suit, pearl necklace, and heels.
The General is prone to overkill and rarely considers what result his actions may have on civilians, to the point he fired at a forest, an inhabited area, and even an amusement park, all in an attempt to destroy a monster.
The running gags in the series involves the General forgetting something and hesitating to remember and planning to get Johnny, Dukey, Susan and Mary an internship when they graduate.
The General also stated in an episode about the test kids “Once you graduate high school, you kids are SO hired!” Elisabeth Olivia "Sissy" Blakley (voiced by Brittney Wilson in Seasons 1 & 5 and Ashleigh Ball in Seasons 2–4 & 6) is a girl who tends to hide her crush on Johnny through bullying and asserting superiority over him.
She has blonde hair with a red lightning bolt pattern, multiple ear piercings, and a plaid skirt with pants underneath.
It's shown that even Johnny can't reason, trick, or bribe him out of a challenging assignment or decision showing that he can be super stubborn and strict.
By the second season, Sissy Blakely took over as Johnny's main love interest leading Janet to be written off.
Howard is an unreliable mayor due to his lack of reason, spending on the town, and his constant need for help at even the most simple solvable problems.
The unnamed lunch lady (voiced by Kathleen Barr) at Porkbelly Middle School has greenish skin and speaks in a German accent.
He sometimes mistakenly doubts or underestimates his students' potential; which results in him being proven wrong, which he responds by giving them a high grade.
He copied the modified genetic structure used by Susan and Mary to enhance Dukey and used it on Mr. Mittens which turned him into an evil villain seeking world domination.
Lolo (voiced by Ashleigh Ball) is Susan and Mary's midnight blue lab monkey on who they sometimes test their experiments.
He has a big crush on Susan, who doesn't reciprocate his feelings, and often resorts to evil plots or blackmail to win her affection, which always fails, usually courtesy of Johnny.
Bling-Bling Boy also attended the Mega Institution of Technology, but was kicked out after his thesis ate Professor Slopsink's hand.
He is somewhat similar to Toyman and his name is a spoof of Wham-O, a real-life toy company, and Wacko, fittingly, means "a crazy person."
In one episode, the reason for Brain Freezer's villainy is that he's just lonely and that girls constantly reject him (which he responds with insanity/madness and hatred) leading his character to be a sympathetic villain.
He does later help out the Test siblings and Dukey saves a candy holiday that they created by giving his Piles 'O Honey Bars to every child in the world.
Due to this, Beekeeper is currently reformed and likes the Tests leading him to be replaced by King Zizrar on the Johnny Stopping Evil Force 5.
Mr. Mittens (voiced by James Arnold Taylor) is an evil cat who was enhanced with the same modified genetic structure as Dukey by his owner Tim Burnout.
Albert isn't seen hating Johnny, but he was forced into the squad because he has to take care of Mr. Mittens all the time (it is debated if he's a villain or he's just doing his job).
King Zizrar (voiced by Scott McNeil) is the ruler of the mole people who on a few occasions attempted to take over the world or invade the surface only to fail due to his intense aversion to light.
Later in the series, Dark Vegan appears as a wildcard of The Tests (he constantly changes from ally to enemy, especially to Johnny).
