tarrs will possess the traits and abilities of the slimes they consist of.
for example, let's say we have a tarr that resulted from a saber/tangle largo consuming a rad plort.
the result will have a physical appearance that is the mix of a generic canon tarr, a saber slime, a tangle slime and a rad slime, along with having all of the components' abilities along with the tarr-exclusive ones (saber slime parkour + roar, tangle slime vine grab and rad slime radiation in this case).
prismatic abominations do count the whole components thing but they dont do that, instead they do assimilation which just works like. uh. eating a slime spawns a generic canon tarr with a slightly different appearance that has the traits and abilites of the specific eaten slime (1 source trait, two random traits belonging to the prismatic abomination's components if a pure slime, 2 source traits and one random trait beloging to the prismatic abomination's components if a largo.)
also any sounds the component slimes make are distorted too. yes, distorted meowing and roaring
tarrs also have their own cosmetic pod lmfao. its desc is "Aw, did those awful, ravenous rainbows get too boring?". dk what to do with it yet
fun fact: phosphor slimes are the main reason why tarr outbreaks happen in the first place