Parallel Susie looks very similar to her counterpart, except with a few key differences. Her helmet, hair, and mech have a black and red color scheme, and her skin is slightly paler. Unlike her counterpart, she lacks an accessory in her hair. During battle, she fights without her blue visor for the first phase. The Haltmann Works Company logos on her mech are replaced with a logo resembling an eye; this logo is also present on King D-Mind's hammer, suggesting that she may be affiliated with him.
As President Parallel Susie, she now has silver skin and silver hair. Her eyes have turned turned hot pink, and she wears a rose suit with a hot pink skirt. The sleeves on her hands are also rose, and she wears silver gloves. She also now has a rose visor.
After many battles, Team Kirby defeats Taranza, the mage who has been causing bosses to attack Dream Kingdom, and peace is briefly restored to the land. This is cut short when a dimensional rift opens, releasing Parallel Susie. Narration later reveals that Taranza, who only feigned defeat, was responsible for summoning the rift and opponent. Shortly after her defeat, another dimensional rift opens up, forcibly sending her back to where she came from and also releasing Parallel Landia.
Parallel Susie is fought at the Decisive Battlefield after being unlocked for 120 Gem Apples. She is an Ordeal boss in the Tougher category and must be defeated before the player can access Parallel Landia. She attacks using some of Susie's techniques from Kirby: Planet Robobot. These primarily include jumping around, spinning her mech's arms, striking the ground from the background to produce shock waves, and firing missiles into the air.
After her first defeat, Parallel Susie would return once again in the Dreamscape, this time as Pres. Parallel Susie. In this form, her attacks are much faster and erratic. She achieved this form after wandering through dimensions and gaining power, as well as becoming the president of presumably a parallel version of the Haltmann Works Company. However, like last time, she is defeated and sent back through a dimensional rift.
After defeating Super: Pres. Parallel Susie, Parallel Susie somehow finds her way back in the dimension of the Dream Kingdom. However, she has reverted to her normal colors, and instead of attacking Team Kirby, she becomes a resident of the Castle Village. She can be seen sitting on top of the Shoppe.
A surprisingly corporate intruder has appeared! Try your hand at this ordeal!”
This, partnered with the fact that Parallel Susie's fight uses the Greater Doomer music, or a remix of Another Dimension's theme from Kirby's Return to Dream Land in Super Kirby Clash, may be a reference to how Susie was transported to Another Dimension and studied the Sphere Doomers while she was there.
Unlike in the battles against Susie and Susie 2.0 in Kirby: Planet Robobot, Parallel Susie is never fought on a looping ring of terrain with a structure in the middle during either of her phases.
In Super Kirby Clash, Parallel Susie doesn't scream when her Business Suit is destroyed, unlike in Team Kirby Clash Deluxe.
The battle theme that plays during the Super category fight with President Parallel Susie is a remix of the theme that plays when fighting Morpho Knight as Susie in Kirby Star Allies.
The markings on President Parallel Susie's Business Suit are somewhat similar to the markings on the Business Suit of President Haltmann.
Because of becoming the resident of the Dream Kingdom, Parallel Susie is one of two Parallel bosses that are not entirely evil. The other is Parallel Landia, as he was corrupted by the Master Crown.