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Trunks : You made it ! You made it Tapion !
Tapion : Trunks, kill me with Hildegarne ! You must protect the Earth !
Trunks : I can't do that !
Tapion : Kill me ! You wan't to become an hero, don't you ?
Trunks : I can't
Tapion : Trunks, if it goes on, Earth will be destroyed. I beg you, let me die as an hero ! If he goes free once again, no one could stop him. I beg you.
(Trunks takes the sword)
Tapion : Thanks, I am glad I met you

Very sad scene of the Dragon Ball Z : Wrath of the Dragon movie.
Tapion is asking Trunks to kill him with the sword, to kill the monster Hildegard kept inside Tapion.

ドラゴンボールZ 龍拳爆発!!悟空がやらねば誰がやる
Dragon Ball Z : L'Attaque du dragon
Dragon Ball Z: Wrath of the Dragon
M2124 "Tapion's Plea For Death"