United.
The second time he becomes aware of being himself again Tiencha knows. He knows his halves are excited for this time. They're in a fight and they've fused to gain the upper hand. Tiencha smirks and cracks his knuckles as he feels the adrenaline course through his body. He's made of two fighters with nearly forty years of experience between them. He was literally made for this.
"I fuse, you lose!" he shouts triumphantly as he launches himself towards the action. He nearly rolls his eyes at himself. Such a corny line. It was most likely from Yamcha. Tien thought it was funny, maybe even a little cute, so Tiencha kept on smiling as he threw punches.
After fighting for quite a while Tiencha realized that his time was nearly up. The half hour limit really was inconvenient but the thought of it only made him fight harder. The less time he had the more energy he'd have to put into the battle. He could sense backup arriving and felt a little relieved. The others could finish up what he started later. For the time being...
"Bring it on!" he shouted with confidence, two voices united as one, as he leaped back into the fray. He was in his element. His halves were comfortable so he was too. He let out a yell as he used the rest of his energy to grow his extra arms. His time was almost up so why not show off a little?