Yeah I wouldn't include Fawkes, he's just a straightforward revolutionary/terrorist (depending on perspective), but the other two certainly, albeit they're at the darker end of things. Some adventurers are just like going around going "WHOA!" a lot like Marco Polo (who I must imagine as Keanu Reeves), a larger proportion are engaging in some dodgy behaviour but not traditional evil like Lewis and Clark or various other colonialist "explorers", but largest section are just thieves, conquerors, invaders, raiders, pirates/legalized pirates, etc. etc. and so on, whether they're Julius Caesar, some random Viking, or whoever.