New DnD characters!

Well well well. I've been busy making characters for different campaign one offs we've decided to have until I host in January.

Here's a rundown of the campaigns we're doing, plus the character's I've made for each.
1) Colossal Red Dragon!
My character: A Level 20 Cold/Water Cleric. (Although possibility of adding in anything which keeps or adds to my caster level).
Tower Shield: +5 with 40 Fire Resist, possibly Mithral.
Weapon (Type undecided): Dragonbane, Icy Blast, Corrosive Burst, Keen, Holy, Wounding, +1.
Mainly he'll be a caster, with plenty of spell penetration to get through that nasty spell resistance, not that he'll be awful in melee.

2) Gargantuan Black Dragon!
My Character: Ranger 12, Beastmaster 1, Animal Lord (Serpents) 7.
Pet: Mountable Level 20 Colossal Constrictor in "Chain Shirt" with Holy, Wounding, Dragonbane, +? Armour Spikes. Some Acid resist would be nice.
I'm in a Mithral Chain Shirt, Plenty of Acid resistance.
I have 2 Scimitars. Keen, Wounding, Holy, Dragonbane, +?

The wounding weapons here are what I'm going for. Plummet his fortitude saves and hitpoints, then really lay into him with poisons to finish him off.

3) High level campaign (3 sessions).
I'm not sure what character I'll use here. I have 2 very interesting options.
Option 1: Karma Kender. I'm thinking Fortunes Friend(5) + Cleric of Destiny and Luck(15). Then all the luck feats I can muster. Ending on something silly like 15 rerolls per day, and some interesting spells.
Option 2: Octopus Prime! Warforge, 5 Levels Druid, 5 Levels Warshaper, 10 Levels Blighter.
With some choice feats, I can polymorph into a huge, Adamantine, undead, flying, Squid, still capable of casting blighter spells.

4) Babylon 5:
I'm playing a level 1 scientist. Computer whizz, technology whizz, and general repairman. More skillpoints than I could actually spend.

5) My own campaign... I'm not even gonna begin to give you my character list for that. :)