Bunsen has a very friendly, kind-hearted personality, though some find his boundless energy and optimism to be annoying, most notably Amanda Killman. He is also somewhat flighty and easily distracted, but always well-meaning, with a very strong moral center. Though he can be naïve, Bunsen is shown to be very witty and clever when he needs to be, and is capable of problem-solving on the spot and outsmarting his adversaries with little effort. Bunsen likes everyone he meets and always sees the good in people rather than the bad.
Bunsen is a wild spirit and tries to do anything and is striving to do anything as he wishes. He aspires to explore different worlds, try new things, and help people have fun and live free, often clashing against the tyrannical aspirations of Amanda Killman's evil reign. He and his best friend Mikey travel leisurely all throughout Muckledunk, often getting themselves into many exciting and dangerous situations.
Despite Bunsen's easy-going nature, there have been times where he has been pushed to his limits. For instance, in "Unhappy Campers", whenever the Beast of Muckledunk Blog posted an annoying blog about what he had for lunch, he would yell at him.
Bunsen is a square-shaped monster with short purple horns, a tuff of blue fur on his head (which is actually his Headspout), a blue face, and round yellow eyes. He also has big pink lips, an over-bite, a cyan chest, and pink arms. Bunsen has a teal torso, a white bottom, stubby pink legs, and a short blue tail with purple spikes on it.
Mikey is Bunsen's best friend. Bunsen has become very good friends with Mikey, and their relationship could possibly be seen as brotherly; as they always look out for each other and help each other out. Mikey is very loyal to Bunsen as Bunsen is to Mikey, and they can be seen hanging out with each other most of the time.
Bunsen and Amanda Killman first met in "Bunsen Is a Beast". Bunsen wouldn't exactly call Amanda a friend because she is always trying to get rid of him; despite that, he is always tolerant towards her.
The exact relationship between Bunsen and Beverly is currently unknown, as they rarely interact with each other.
Bunsen and Darcy are good friends.
Miss Flap is Bunsen's teacher. It's unknown of their relationship as of this point.
Cosmo and Bunsen met at a "Creature Con", a place where all magical creatures come to unite.
In "Bunsen Screams for Ice Cream", Bunsen is attracted to the music and ice cream from Commander Cone's truck. After getting bribed by Amanda, Cone uses his ice cream truck to distract Bunsen from school so he will be expelled. Fortunately for Bunsen, with help from Mikey, he resisted the sounds of the ice cream truck, and after school, Cone offered Bunsen and Mikey his truck. In "Astro-Nots", Bunsen and Mikey ask Commander Cone to give them a tour through Outer Space, thinking he is a Mastronaut. As the episode progressed, the three of them became good friends, and with Bunsen and Mikey's help, Cone changes from ice cream vendor to an actual Mastronaut.
Every episode ever of Season 1.
- German: Gerald Schale
- Serbian: Марко Марковић / Marko Marković
- Latin American: Alberto Bernal
- Greek: Γιώργος Σκουφής / Giorgos Skoufis
|[[File:|325px|link=Bunsen/Gallery|Click here to view more images from Bunsen.]]|
|The image gallery for Bunsen may be viewed here.|
- He was originally going to have a long tail until it was changed to a short tail.
- Jeremy Rowley, the person who voices Bunsen, also plays Rate the Pain Victim from the show All That, Lewbert Sline from the show iCarly, and Amanda's fake father and a customer from The Amanda Show.
- Butch Hartman had a drawing of a beast in 2009 which would later on be him.
- He has been a human once in "Handsome Beast".
- He once lived in Beast World.
- He and Mikey are the only characters to appear in every episode.
- His pattern and coloring resembles a Bunsen burner's flame, which is probably where he got his name from.
- Small spurts of water seem to come out of him whenever he uses one of his abilities.
- He appears to be based on a goat, a goblin, a cat, a dragon, (possibly) a dinosaur, and a dog.
- Sometimes, before he uses an ability, he starts to shake, wobble, or have jerky movements, garble, and make random noises. This is seen in Bunsen Is a Beast! (episode), Tooth or Consequences, Guinea Some Lovin'!, and Split Decision.
|“||No worries, Dad. It's no big deal.||”|
— First line, "Bunsen Is a Beast"