You can get very close, and it depends on which character sheet & roll templates your game is using. Here's an example for the D&D 5e by Roll20 sheet: The top damage roll was made legitimately, with the second photo showing what the tooltip mouseover looks like when hovering. The bottom damage roll photos show a faked damage roll. You can insert a tooltip, but you'll always get that green 'API or player-generated content' message above it, and I couldn't get the small 'quantumrollwhite' image to display either, as that uses an image tag and I don't think it's possible to force that in. Otherwise the roll looks identical. But basically if you want to get real close you can use an HTML Style Injection to fake almost everything about the roll. But you'd have to set up the roll in advance, and you also can't have the rolled numbers colored red or green for critical failures or successes. Here's the code I used for the damage roll. The three parts that are bolded are what you have to manually adjust: &{template:npcdmg} {{damage=1}} {{dmg1flag=1}} {{dmg1= [ 5 ](#" style="line-height: 1.25em; font-size: 1.1em; font-weight: bold; text-decoration: none;" class="showtip" title=" Rolling 1d6 + 2+0 = (3)+2+0 ") [ slashing ](#" style="line-height: 1.25em; font-size: 1.05em; text-decoration: none;")}}