Seems Drake just had his guard lowered since he came there, expecting Queen to be relaxed and he had Who's Who's help but really he ended up getting attacked by Queen despite having 2 guys, Hawkins and Who's Who, that seemed like allies moments before around. I don't think anyone transformed and Queen seems to be the only one who had a chance to draw their weapon so he probably just attacked Drake and Drake didn't put up much of a fight due to the situation and the fact there was 3 of them and if he transformed, they'd go all out as well so I'd say it was just Queen. At most Who's Who hit him from behind to confuse him but he didn't even have his sword out or anything.