Blue is a red fawn and white, male, AKC-registered English Bulldog and can be easily recognised by the marking above his right eyebrow.

A "Changing of the Collar" ceremony marking Blue's succession to the mascot role was held on February 29 as part of pregame festivities for the final Butler men's basketball home game of the season against DePaul.

Blue IV spent the first several weeks after being unveiled meeting students and adjusting to his new role,[3] and had completed a training course alongside Krauss at a local dog obedience school before the "Changing of the Collar" ceremony.

[1] Prior to the 2021 NCAA Division I men's basketball tournament, which was moved in its entirety to Butler's home city of Indianapolis and nearby areas in Indiana due to COVID-19, with some games played at Hinkle Fieldhouse, Butler launched a publicity campaign declaring Blue IV to be the "Mayor of March", complete with a proclamation purportedly from Blue.

Cared for by Michael Kaltenmark and his wife Tiffany,[2] Blue III weighs 65 pounds and is distinguished by his red brindle and white markings.

Now a recognized AKC Canine Good Citizen, Blue III has assumed the primary role of official mascot for Butler University.

Aptly nicknamed “Trip” (short for Triple, since he is the third mascot in succession), this red brindled, AKC-registered English bulldog also resides with the Michael Kaltenmark ’02, Director of External Relations, and his wife Tiffany.

In addition, Blue III enjoys great care and support from Bark Tutor, City Dogs Grocery, Don Hinds Ford, Good Dog Hotel & Spa, Holistic Select, Nike, Wellness Pet Company, and Dr. Kurt Phillips’ 92 of Mass Ave Animal Clinic and Fountain Square Animal Clinic.

In a university press release, Kaltenmark noted that Trip was approaching the life expectancy of his breed:While he loves to work and enjoys being the Butler Bulldog, it's time.

The average lifespan of an English bulldog is 8-to-12 years, and now that Trip is entering that range, we want to make sure he gets to enjoy the simple pleasures of life as just our family dog.

[2] Kaltenmark received a hospital visit from Trip on the day after his transplant; he would tell Jeff Borzello of ESPN, "He came today, he wanted to perform.

"[6] He rose to national prominence when the Butler Bulldogs men's basketball team made unexpected runs to the 2010 and 2011 Final Fours.

[7] Blue II was born on March 27, 2004, to sire CH Sandy Ridge Too Right Mate and dam Kongs Margie M. Blue II is the second in a lineage of English Bulldogs bred by Frank and Jeane King of Kong King Kennels in Lizton, Indiana, to serve as the mascot of Butler.

Throughout his career, Blue II attended most Butler Bulldogs home basketball and football games, as well as numerous other university events.

[6] Before each home basketball game, Blue II sat at mid-court and waited as each starter pat him on the head for good luck.

[7][9] According to ESPN's Eamonn Brennan, Blue II "fostered an online persona second to none in college sports", using Twitter better than most coaches.

[10] During the 2010 NCAA Division I men's basketball tournament opening rounds, Butler requested to have Blue II attended the games.

However, when Butler made an unexpected run to the Final Four, Blue II was granted a special exemption and allowed to attend the festivities in Indianapolis.

[12] Next to then-head coach Brad Stevens, Blue II had become the "undisputed star" of Butler basketball, according to Eamonn Brennan.

Southwest Airlines allowed Blue II to join Kaltenmark in the main cabin of the plane, rather than relegating him to the cargo hold.

[7] If Butler had made the Final Four, Blue II would have attended the event, but the Bulldogs lost in the third round of the NCAA tournament to Marquette.

[23] Butler staff member Kelli Walker selected the all-white female from the Kings’ litter and agreed to care for the dog on behalf of the University.