In Asterix in Switzerland, there are at least two implied future deaths (quoting from TV Tropes):
Back in the Gaulish village, Varius Flavus arrives to pretend to be upset about Asterix and Obelix not getting back and the Gauls having to kill their hostage — at which point a fully-cured (and magic potion-strengthened) Sinusitus emerges from Getafix's hut and punches Flavus into the sky, telling him that, when he lands, he'll be thrown to the lions along with Curius Odus.
As with the shark above, these deaths happen offscreen and indeed may not happen.
In Asterix and the Cauldron, Asterix and Obelix tries various ways to earn money, including working in the theater - only to get their entire troupe arrested when Obelix shouts "These Romans are crazy!" in the presence of a high ranking official. A&O easily escape and want to spring the leader of the troupe, but he is ecstatic about being able to perform in front of a huge crowd, with lions, even, and refuses. It is implied that he will be be killed by the lions, but, again, this isn't shown.