Mary Test
Johnny Test Johnny Test

Mary Test

Comparision of the voice over actors who have been the voice of Mary Test with sound clips and images.
Franchise: Johnny Test

Mary Test is the twin sister of Susan Test and the older sister of Johnny Test. She and Susan are geniuses capable of inventing whatever the show feels like doing each week, with Johnny often acting as their guinea pig. She and Susan both harbor a crush on Gil, who lives next door. Out of the two twins, Mary's mindset leans more toward science-fiction than proven science, but is often proven to be the voice of reason.

Mary is voiced by Brittney Wilson in the first season and by Ashleigh Ball in the second, third and fourth seasons. When Ball left the show to focus on much better things, Wilson returned as the voice of Mary for the fifth season onward.
Created by CatsTuxedo on Aug 14 2012
Johnny Test (2005)
Mary TestAshleigh Ball
Ashleigh Ball
Johnny Test (2005)
Mary TestBrittney Wilson
Brittney Wilson


Both actresses have a lower vocal tone than Maryke Hendrikse's Susan, so they get points for differentiating their performances from the other character. However, as with the last voice compare, I don't care enough for the show or its characters to latch my preferences onto one performance.



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said at 9:15 PM on Sat Aug 20 2016
 1 Shout Out!
Brittney sounds the most natural and her voice is very distinctive from Maryke's Susan voice.
Ashleigh I will give her props but at times I picture Rainbow Dash also she sounds a little younger than the character's actual age.
said at 9:23 AM on Thu Apr 21 2016
1. Brittney Wilson
2. Ashleigh Ball
said at 12:32 PM on Sun Sep 6 2015
1. Brittany Wilson: Her vocal tone and delivery are perfect for Mary and it really distinguishes her voice from Susan's.
2. Ashleigh Ball: While Ball is great in MLP: FiM she makes Mary sound younger than she is supposed to be.
said at 1:32 PM on Sun Jun 1 2014
Ball is back for s6.
Mayl Sakurai
said at 7:39 PM on Tue Nov 20 2012
 1 Shout Out!
Brittney is the voice of me!!!!!!!!!!!!!!!
said at 7:29 PM on Thu Sep 13 2012
Ashleigh Ball gave Mary Test a nice voice that fit her character and differentiated her from Susan Test, who was usually loud and more prone to anger. I missed hearing her voice in the episodes produced after series (season) four.
said at 8:49 PM on Wed Oct 3 2012
@Mario500 Ball was okay, but Wilson's take on Mary is more fitting IMHO
said at 6:38 PM on Tue Aug 14 2012
 2 Shout Outs!
Both voices are okay, but I'll go for Wilson since the other voice kind of gives me a "bad vibration"...
said at 8:41 PM on Fri Aug 17 2012
@MaryKosmos I agree Wilson is a bit lighter on the ears
Ball sounds too young for Mary
said at 10:12 AM on Tue Aug 14 2012
 2 Shout Outs!
I like Brittney Wilson's Mary voice better
said at 3:00 AM on Tue Aug 14 2012
 3 Shout Outs!
Mary sounds like Rainbow Dash when Ashleigh does her voice.
said at 4:24 PM on Sun Aug 26 2012
@Dogman15 True
Wilson sounds more natural
said at 2:45 PM on Mon Aug 27 2012
@MatthewC17 Rainbow Dash is talking about science things!
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Who do you think has been the best from these Mary Test voice actors?
Brittney Wilson
Ashleigh Ball
Sissy Blakely
Sissy Blakely