1.
Both version : Change sound of Abrams's Siphon Life(skill 1) to play "JoJo's Bizarre Adventure: Stardust Crusaders OST - Stardust Crusaders"(aka, Jotaro Theme) during its duration

2.
default version : Change sounds of Abrams's Ult to play Jotaro's Star Platinum summon voiceline on its activation, and Star Platinum's "ORA" on descend.(on top of vanilla sounds)
OR
_RoadRollerDa version : Change sounds of Abrams's Ult to play DIO's "ROADROLLERDA" voiceline on its activation(on top of vanilla sound), and impact sound.

Ults sounds are from "Jojo's Bizarre Adventure: Stardust Crusaders TVA(2014~2015)"