Hey all, wighing in. After seeing the exposed panels, it is most likely Rum=Wakita, and like mentioned above, the ID of Rum isn't the focus, rather the information to be delivered.
Yet, I do take it that it is a highly unlikely reveal of RUM. Who in fact, I would like to, as I previousy did, claim he is the fittest candidate for RUM. This revealation, is likely to be a red herring. I do understand that all pieces fall together, and I do take it to be fitting for Gosho to do so. Yet, I have doubt whether he would want to reveal RUM in such a way. The reason being, RUM would not make this grand mistake; to reveal his face to the two drivers, specially if he works like Vermouth/Bourbon, and is super cautious to mislead others by claiming false characteristics.
Hence, to suit theories; I rather see him in more of a guardian role, to everyone's surprise, the red herring of RUM, is actually none other than Tsutomo/Shuu's father. And his true role, explained by the foreign drivers, is CIA. it's been quite a while since they did not engage in BO affairs, not to forget about Ethan Hondo and his daughter. Yet it has been a long of time before any CIA had any move on BO, not in the investigation nor scouting areas.
Hence, we can assume, Tsutomo is actually Wakita. An undercover CIA agent, who is not supposed to be part of this world. His purpose was actually to investigate RUM.
His curiuous filled comment, matches his earlier saying to his wife.
To my mind, it seems like a surprise reveal, a clever move, something I would do myself as a writer. To simply throw in the most suitable candidate in such a drop reveal to twist the revealation. Hence, again it is not for Gosho to easily reveal such an important character.
Again with the revealed pictures, while I believe the BO has international reach. Wakita's drivers seem more American/Blonde, rather than Japanese. Why would RUM bring outside agents to drive him and reveal his true face to them. To me it would be easier, to have a close ethnic character to be on the sure side of knowing the streets and the language (as we can see Jodie made the grand mistake within the current case). The foreign agents, mostly Americans, and Wakita's ease to reveal his face to them, inclines me to think he is a CIA most fittingly to be Tsutomo. While the real RUM, is Kurdoa.
I may be superbly wrong, however, the leak is mysterious in it's way of releasing certain pictures. It may as well be illustrated by Gosho/leaked in a manner, to seamlessly fit panels to misdirect us. Rum could be at another place, and this is another character, I'd say CIA agent Tsutomo, who wants to investigate Camel.
I still cannot get over the fact that RUM reveals his true face to two foreign agents even if he trusts them. Furthermore, his left eye is white/no iris. For Rum to wear a prosthetic eye, he could wear a normal looking one. Why would he resort to a mere white fake eye.
The mention of the Pirate's Spirit, and the weak horse, they allude to a different outlook on the character. It is more than likely. That the Tsutomo CIA personna, may have died when he was revealed to BO and could endanger him/his family, so he killed his ID. And instead used a made up personna to inflitrate BO (Like Shuuichi). Hence creating the Wakita character.
I may be going overboard, yet the old guess of the old man turned half true. However, I'm going to write it anyways; the Daikoku building explosion, back in earlier chapters, when Conan was tipped by the killer about BO, and he raced to the cafe that just exploded. I believe that is the case, that prompted Wakita/Rum/Tsutomo, to take a notice at Kogoro who was the detective that solved the case.
I take it, that if it is as it is, that Wakita=Rum. We are going to dive into the BO, and Conan will somehow know from Rum more info about them. I understand Gosho's mindset and gracefuly accept the reveal as it is, for it wasn't that big of a surprise to me. Yet in the light that Gosho may be playing us, to entertain our frustration with a better twist. Is still a possible way to go.
Is it still far fetched, to say Rum=Wakita=Tsutomo, a character who has been induced into BO?
*** An amusing thought; IS it me, or Wakita's true appearance, is way too similar to Anokata/Karasuma's appearance, both have hooked nose, droppy eyes shape, thick neck, and somewhat a stout body. Could he be the deaged Anokata, hiding his ID by masquerading as his own second in command
. Or is he a possible Karasuma family member, perhaps the son of Karasuma, cannot believe a 90+ super rich person not having at least a child
.
Sounds like a battle of wits between the two quick witted! Personally, I'm not worried about Camel cuz if he's caught with his face intact then Kir, Bourbon, Akai would all have to go down... and if any significant information about RUM was revealed before the new movie is released it would really spoil the anticipation, so... no. 
