In her Kai Ni form, she gains a cape and a cutlass as well as a more ornate eyepatch and four quintuple torpedo launchers. At various places, her ship parts, rigging and cape are painted to a winter camouflage which resembles a zebra's lines. Getting her damaged reveals that her right eye is yellow instead of green (probably a fake as well).
Kiso doesn't use a verbal tic herself but she is often coerced by her elder sisters to use one ("I am Kiso... -kiso!").
She is often paired with Maru-Yu, due to an anecdotal incident with some of the historic Maru-Yu-class sub's first dives. Kiso's crew apparently looked on in disbelief that the Maru-Yu even was a sub or could dive. Artists often treat Kiso as Maru-Yu's senpai and role model.
She is also occasionally paired with Tenryuu due to their similar personalities and their eyepatches. Aside of the eyepatch, she is the spitting image of a certain captain. Considering that her artist has drawn Murasa in the past, this might not be a coincidence. In her Kai-2 form, she also resembles yet another captain.