VIDEOS:
DBZA - How Cell time travelled
While Trunks' travelling to the past to defeat the Androids was well-intentioned, the mechanics of time travel let an even greater threat follow him - Cell.
Example of:
Unwitting Instigator of Doom
While Trunks' travelling to the past to defeat the Androids was well-intentioned, the mechanics of time travel let an even greater threat follow him - Cell.
Example of:
Unwitting Instigator of Doom