Seeing as some other shit was going on, the blonde had probably the wisest decision he's made thus far: getting the hell out of there before things really do get hellish. He happened to go right after Starfire had went outside moments before.

"Hey! What was all of that about back in there?" the blonde asked Starfire, not noticing that his partner was still inside. Some time after this question, he noticed that there was this figure of mana alike to the guy that was making the ruckus earlier the moment he and his partner dropped into the TARDIS was outside, possibly taunting them. Not even going to say anything about that, the blonde had his dual pistols be summoned to his hands from the seals on his wrists, and he shot several electrical charged shots at this figure of Mana.
----
During all of this, the white-haired boy only observed, as if he gotten an interest in all of this. However, he didn't seem to have any as he only walked up to the Doctor after the man had seemingly disappeared.

"So...with that aside, I suppose that it's a good time for me to introduce myself, or is it not?" the white-haired boy said, not thinking of the possibility that Romulus was actually inside the Doctor's heart...or something like that. It seemed like this boy didn't care that something very seriously bad had just happened...who was he to take sides at first chance?