I doubt Boom would kill UTTVM off as the WOD, so this is how I think you could best kill off UTTVM. Also play this while reading. (If you want, I'm not your dad.)
This would be at the end of the series... The Titans and other alliance members have infiltrated the mothership; they have just successfully killed the Duchess and the Overseer... All four titans, UTTVM, UTSM, UTCM, and G-Toilet are injured... Set ablaze and exhausted... All of a sudden, the Mothership has an alarm go off, announcing that it's going to self-destruct and that its systems are locked down...
The thing is, one of them would have to stay behind just for the other three to escape. In UTTVM's perspective, seeing everyone crippled as hell, and knowing damn well he has caused the alliance tons of harm, such as killing hundreds of their soldiers and destroying the Headquarters of the Cameramen, he knows it should be him to stay behind... While at the time he didn't believe it, he knows it's true, "It takes sacrifice to achieve progress..."
UTTVM would push all of the other Titans out of the control room they were in. UTSM and UTCM, (similar to UTSM Ep. 74) would start reaching out to him, but G-Toilet would restrain them. UTTVM would look back at them and make a ":3" emoticon. The door would shut, where G-Toilet would fly away with both of the other Titans.
Titan TV Man would destroy the control panel allowing the other Titans to officially escape. Sure, he could just teleport away himself, but what's the point? He'd already caused enough pain and didn't deserve to survive through this moment... The alarm would stop before the entire Mothership would come down and explode...
UTCM and UTSM would just look up in the sky emotionless, and moment UTTVM could just teleport back there and would be perfectly fine, right? Right..?
OG image by Alshain2705 ofc.