The character was introduced as the older sister to the three original Powerpuff Girls, having been absent during all their lives because she ran away when she lost control of her powers.

Bliss is taller and has a more developed body than the three younger Powerpuff Girls, with brown skin that is shades darker than would be described as a common tan, purple eyes, and cyan hair.

[23][24][25] As a response to a rival's creation of the perfect little boy, Professor Utonium created Bliss out of sugar, spice, and everything nice; however, he accidentally used Chemical W (as opposed to the other Powerpuff Girls who were created with Chemical X) which gave Bliss unique psionic powers (telekinesis, short-range teleportation, and energy) that neither her sisters nor their original counterparts possess.

Louise Mccreesh of Digital Spy expressed that she believed that the character was a great step forward in terms of racial diversity.

[30][31] Charles Pulliam-Moore of io9 stated that the character is different from the other temporary additions to the Powerpuff trio such as Princess Morbucks, Bunny, and Bullet the Squirrel, all who existed to teach the original girls moral lessons before they left the group to pursue their own destinies.

While Bliss does not appear to him in that way, he expressed that he felt that the story of The Power of Four made him question whether the new reboot was a good idea in the first place.

Despite this, he felt that he was disappointed in the fact that the first non-white Powerpuff girl had been introduced as an emotionally unstable time-bomb who is not capable of putting her feelings together properly to act as a regular superhero like the others.

[9] Kayla Sutton, a social media curator and the major contributor for the digital publication Black Girl Nerds, cried when the character was unveiled.

Paula Poindexter who teaches media representation of African Americans at the University of Texas, who saw it as a positive that there is a person of color in the series, did express some concern about Bliss's characterization as an emotional teenager who cannot control herself to The Daily Dot as well.