No. Ant Man can shrink while maintaining his original mass. Fun with Pym Particles.
This Blue Beetle, the 3rd, merges with an alien super weapon in the form of a scarab. The scarab uses nanites to give him super powers, flight, strength, minor invulnerability, and the power to craft weapons on an as needed basis.
The previous Blue Beetle, Ted Kord, ran around with Batman style tech maybe 20 years before, only not as good. LOL. He also had a flying beetle ship called the Bug. This version of the character was the basis for Nite Owl in Watchmen.
The other previous Blue Beetle, Dan Garrett, discovered the scarab in an arcaeological dig and it gave him mild invulnerability, flight and energy blasts.