who was in charge of the effects for the film?
Arthur Windus and John Bruno
Alien vs. Predator (film)
Special effects company Amalgamated Dynamics Incorporated (ADI) was hired for the movie, having previously worked on "Alien 3" and "Alien: Resurrection". Visual special effects producers Arthur Windus and John Bruno were in charge of the project, which contained 400 effects shots. ADI founders Alec Gillis, Tom Woodruff Jr. and members of their company, began designing costumes, miniatures and effects in June 2003. For five months the creatures were redesigned, the Predators wrist blades being extended roughly four times longer than those in the "Predator" films, and a larger mechanical plasma caster was created for the Scar Predator.

who won in the movie alien vs predator UNANSWERABLE is there any sequel of the film? Yes - Aliens vs. Predator: Requiem
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Alien vs. Predator (film) [SEP] Effects and creatures
The puppet was used in six shots, including the fight scene with the Predator which took one month to film. The crew tried to keep CGI use to a minimum, as Anderson said people in suits and puppets are scarier than CGI monsters as they are "there in the frame". Roughly 70% of scenes were created using suits, puppets, and miniatures. The Alien queen was filmed using three variations: a 4.8-meter practical version, a 1.2-meter puppet, and a computer-generated version. The practical version required 12 puppeteers to operate, and CGI tails were added to the Aliens and the queen as they were difficult to animate using puppetry.