If you want some thing done, blown up or obliterated
[basicly same as blown up] Masterchief is your man. In All Halo games he never fails to own the covenant whether it may be on land air or warthog he'll get there andkill everyone and maybe blow the planet up while hes at it. Nothing scares him whether it be green sludge/potato like creatures to big robot scarabs because masterchief has the 'spartan suit' yeah you can imagine him saying "bullets and drones may hurt my bones but my shield recharges anyway" or something like that. Since halo combat evolved he has raised the bar on all first person shooters not only hes great at shooting aliens he can fly/drive/pilot almost anything that comes by...anything
[apart from halo 1 where he couldnt drive covenant tanks] not only that he knows the usage of every gun in battle from human weapons to lasers from robots or needlers that fire needles if there is an obstacle in his path he'll blow it up or do something equally awesome. If you are gonna pick a fight dont pick a fight with Masterchief ;)