Dear Lord. If you're crashing, sometimes it's better to just walk away.
Let me come out and say it now that everyone in this room was very good, very competent.
Can't remember who all was who and what colors, but I recall I was with two friendlies, at least a P3 Ike/Yoshi/Marth and a P4 Zelda/Peach, and a persistent P2 Zero Suit Samus/Lucas/Olimar/Link/Pikachu/Sheik/Falco crasher. Myself, I alternated switching between primarily Captain Falcon and other various mains. Also, Final Destination was chosen every time.
Anyway, the first set of matches began and I instantly fixated the fight on just me against the crasher. P3 and P4 would view from the sidelines until later and watch in entertainment as I delivered Punch after Falcon Punch, Knee after Knee of Justice. Several matches in, P2 hadn't yet won a single time and P3 and P4 finally joined the charades. Although I still was mostly leading the fight, we each took turns mercilessly beating down on the crasher. One spectacle I remember particularly was when I, Ganondorf, had been launched vertically by the crasher's ZSS, and on my descent down I started up a Warlock Punch; P2 initially saw it coming and warily rolled out of my general direction, straight into P4 Zelda's side smash and sent hurtling towards me as my fist collided devistatingly with P2 just as I'd regained my footing. KO, replay saved. Taunts all around. Another time, P3 dittoed me with Falcon and we had a gentlemanly Knee-off on P2 to see who could land the most Knees.
More time later, the matches shifted and it became apparent that the crasher had now focused solely on P4. For a while, P3 and I kept on with the spanking until I decided enough was enough and allowed P2 their moment of glory to having it out with P4; P3 followed suit, and we backed away. Fighting one-on-one, P4 annihilated P2 into oblivion, and soon I grew bored of watching so I charged in again. Eventually, the brawl was drawn back to just me and the crasher and we butted heads once more. By now I'd been playing so long, my performance was getting lazy, and in a last-minute ditch I sloppily versed my ZSS against P2's ZSS. The crasher was finally given the upper hand by winning over one point, and upon their victory, they somehow managed to disconnect everyone in the room simultaneously. Afterward, I put Brawl down for the night.
Alas, my stance on crashing and threes-vs.-ones like this is simple: as a crasher, chances are you already know, and have willingly embraced, that you're kicking a hornet's nest and are prepared for an unfair fight. As a matter of fact, I'm sure the only reason crashers stay for as long as they do is because they're in it for the challenge, so unless I'm the one crashing, they'll get no sympathy from me. For this I must commend P2 for lasting it out and enduring as long as they did. A salute!