Any criminal except murderers can join.
A pot conviction won't even keep you out of the US Army.
Traditionally, during the 20th century and beyond, the Foreign Legion consisted primarily of foreigners (not French, excepting the officers). An Australian would be a foreigner.
You cannot enlist with the French Foreign Legion from abroad. You have to travel to France, and to go through a selection process and selection tests. Terms and conditions are explained in link below (French Foreign Legion website - English version)
Foreign is "étranger" in French.
See: French Embassy and French Foreign Legion
A foreigner can only join the French Foreign Legion regiments. You cannot enlist with them from abroad, but you have to travel to France first, and to go through a selection process and selection tests. Your health and fitness will be tested. Terms and conditions are explained in link below (French Foreign Legion website - English version)
French Foreign Legion was created in 1831.
Bon appétit is a French expression. This is not foreign for the French.
French Foreign Legion - song - was created in 1958.
No. The entry criteria for the Legion are very strict nowadays, and most recruits have served in other armies. You'd need to be extremely fit, both physically and psychologically, and the training is probably harder than in any other army unit. And you'd have to learn French.
There are no specific figures on the number of Filipinos in the French Foreign Legion. The Legion recruits soldiers from all nationalities, and there may be some Filipinos serving, but it is not possible to give an exact number.
Yes the french foreign legion still exists if you google it you will find all the information.
... from a foreign country is '... d'un pays étranger' in French.