The larval sac.
The unfinished ‘leaper’ puppet.
The leg extensions are tested.
Chris Walas goofs around with the leg extensions.
The close-up bust animatronic.
MartinFly emerges.
The ‘walker’ MartinFly.
Production still of MartinFly as the gene-switching process is about to begin.
MartinFly in the final film.
Main Article: Son of Brundle
Monster Legacy 
Nice article, thank you !
today film’s creatures have lost this ‘soul’, this feeling of real flesh, teeth, eyes… because it’s all computer renderings. A shame. When I watch a film with a 3D virtual creature, I’m never as captivated, frightened than in a film with a ‘living’ articulated puppet like Alien (which is a true masterpiece). The monster seems to actually exist…
Fully agree, Frank !
Studios nowadays ruin movies, because they want it “cheap and fast”, completely ignoring the art form that goes into this stuff. Point is all they care about is the big bucks