The player WITH the MTB has to roll, because if he rolls a 1 they tie and you both have to roll again. The player AGAINST the MTB could roll, but it doesn't matter what you roll because it becomes a 1. It's like if you do roll, then after the roll you pick up the die and put it so that the 1 is facing up.

If you have Lobot CLO on your team and are playing against an MTB, you'll never get Reserves unless your opponent rolls a 1, causing a tie and a re-roll, and then you roll an 11 on the re-roll (since Tactics Broker doesn't happen twice, you get the actual result of the second roll).

I'm not aware of any time this came up during the Atlanta regional. If it did, it certainly wasn't brought to my attention, so I don't know how it worked out, but that's the ruling.

I might have over-explained. The "initiative check" is what you rolled on the die. If you rolled a 20, that means your initiative check was a 20. If you rolled an 11, that means your initiative check was an 11.

Tactics Broker makes it so your initiative check is automatically a 1. So no, you don't have to roll. It's a 1. For all intents and purposes, you rolled a 1 on your initiative roll. If you have Reserves that give you characters on a 1 (like Nute Gunray or San Hill), then those Reserves happen, because you got a 1. Any other Reserve numbers don't happen.

If the player who controls the MTB ALSO got a 1 on their initiative check (because they actually rolled, so there's a 5% chance that it's a 1), then it's a tie. Yours is a 1 because of Tactics Broker, theirs is a 1 because they rolled that. In the case of a tie, you re-roll. Tactics Broker says


So the second roll, the tie braking re-roll, would just be a normal initiative roll.



The really short answer to your question of "do you roll?" is "no".