This video Gundam's moving way by physical measurement. He said relative density of each body parts is set as the same as humans one. Every parts are made in three di mention (not drawing). Each joint can move like plastic models. Gundam's hand can hold and open.
-First movement is roll-over. It's possible to shift Gundam's center of gravity toward to side and using arm and leg.
-Next is crawling movement.
-Third is creeping.
-They can stand up? They can stand up slowly.
-They can walk? yes but it will take 4 seconds for one step.
They can move far better than I expected. Actually I thought it might be impossible to stand straight.
Such physically possible verification for animation was hot topic before because of the book "Kūsō Kagaku Dokuhon", I liked and read some of them. For example, world wide famouse animation Heidi. She ride a swing in opening theme, The book calculate speed of swing from declination at the peak. Then speed is 50 mile/80km per hour. It mean Heidi enjoyed the swing with risk of death.