Rate my team... Help my team.

[Poke-Master]

Someone please rate my team! And, please help me too. This is my Fire Red team ok?

BLISSEY (female) @ Leftovers
Ability: Serene Grace
Toxic
Thunderbolt
Psychic
Softboiled

LAPRAS (female) @ Leftovers
Ability: Shell Armor
Surf
Strength
Ice Beam
Sheer Cold

TYRANITAR (male) @ King's Rock
Ability: Sand Stream
Aerial Ace
Dragon Claw
Earthquake
Crunch

DRAGONITE (male) @bright powder
Ability: Inner Focus
Fly
Earthquake
Thunderbolt
Dragon Dance

SALAMENCE (male) @ King's Rock
Ability: Intimidate
Fly
Earthquake
Flamethrower
Dragon Claw

NEED HELP. Sixth Pokemon should be a good Hoenn Psychic (or legendary). Thank You!
Current 6th pokemon:
Latias (female) @Shell Bell
Ability: Levitate
Mist Ball, Thunderbolt, ice Beam & Recover

[Little Rukario]

Okay to start off...
Your Blissey is good but you should try this moveset.
Blissey
@Leftovers
Heal Bell
Thunderwave
Seismic toss
Softboiled
Blissey is a good pokemon to have and toug to beat, so you should choose its moves carefully.
For Lapras, you shouln't limit its attacks, just giving it all water and ice, isn't good on your part. Each move should be able to cover it in any situation. So you don't need more than one ice attack. Here's my suggestion for a moveset:
Lapras
@ Leftovers
Surf
Thunderbolt
Ice Beam
Confuse Ray
HMs are pretty much useless in battle, except for surf.
Don't just limit your pokemon to physical attacks it needs at least one to up its stats. So this moveset would be best.
Tyranitar
@ Leichi Berry
Crunch
Dragon Dance
Earthquake
Rockslide
Dragons easily fall to ice and lightning attacks, so just in case you are put in that situation, you'll need a few of these attacks.
Dragonite
@Chesto Berry/Leftovers
Aerial Ace/Wing Attack
Earthquake
Flamethrower
Dragon Dance
Fly is very bad, as it gives your opponent time to switch out, up its stats, protect or use an attack such as dive, dig, solar beam, or fly. It leaves you open. Dragonite is a dragon, so it should also have a fire attack handy. Either flamethrower of fireblast will do.
Salamence
@ Choice Band
Aerial Ace
Earthquake
Flamethrower
Dragon Dance
Fly maybe useful outside of battle, but your opponent could easily swith out on you or BP with a rock or groud type. Dragon Claw really isn't needed.
6th Pokemon:
Gardevoir
@Salac Berry
Psychic
Will-O-Wisp
Calm Mind
Thunder Bolt
I suggest Gardevoir as you sixth Pokemon, as it is a good psychic type. I really don't like using legendaries.

[mew_master]

blissey
~softboiled
~thunder wave
~heal bell/aromatherapy
~Seismic toss

Lapras
~surf
~ice beam
~Thunderbolt
~Confuse ray/haze(i forgot if it could learn it or not)

Tyranitar
~Dragon dance
~earthquake
~thunderbolt
~rock Slide/hp rock

Dragonite
~Dragon Dance
~earthquake
~aerial ace
~fire blast/flamethrower

i don't really see the point of another dragon type, especially if it's and dragonites and tyranitars are almost the same. i see you dont have any electric types, so try this
jolteon
~thunderbolt
~HP grass
~substitute
~quick attack/toxic

i like the idea of gardevoir:
gardevoir
~psychic
~thunderbolt
~calm mind
~hypnosis/will-o-wisp/destiny bond

[Spike Razzor]

Blissey can sub that T-Wave for Ice Beam, that way you can pick on Gengar.

[Alexander the great v2]

go w/ Little rukario sets, and lol at latias w/o soul dew