I decided to end your suffering of trying to guess the types and themes.

Just so you know, while it was obvious some folks would guess the types, it's not that hard to do, not one person got the theme they share, so allow me to answer:

All three starters are based off of the Rune gods from an early clamp work: Magic Knight rayearth.

This one is based on the water rune god, Celes.

EX160. Dragua (Dragon - Agua)
Type: Water
Species: sea dragon
Abililty(s): Torrent, Rough skin (dream ability)

evolves into Hydrake at level 18

HP: 80
ATK: 40
DEF: 50
SPATK: 40
SPDEF: 50
SPD: 20
Total: 320

Start Scratch
Start Leer
6 Water Gun
8 Rage
13 Bite
15 Scary Face
20 Ice Fang
22 Scald
27 Crunch
29 Chip Away
34 Slash
36 Screech
41 Thrash
43 Aqua Tail
48 Superpower
50 Hydro Pump

TM01 Hone Claws
TM02 Dragon Claw
TM06 Toxic
TM07 Hail
TM10 Hidden Power
TM13 Ice Beam
TM14 Blizzard
TM17 Protect
TM18 Rain Dance
TM21 Frustration
TM27 Return
TM28 Dig
TM31 Brick Break
TM32 Double Team
TM39 Rock Tomb
TM40 Aerial Ace
TM42 Facade
TM44 Rest
TM45 Attract
TM48 Round
TM55 Scald
TM56 Fling
TM65 Shadow Claw
TM75 Swords Dance
TM80 Rock Slide
TM87 Swagger
TM90 Substitute
HM01 Cut
HM03 Surf
HM05 Waterfall
HM06 Dive

Dragua are very territorial creatures, any land they blast with their water, they claim as there territory, andything that tries to step into without permission gets another blast of water. Their rough, coral like skin protects them.

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EX161. Hydrake (Hydro - Drake)
Type: Water/Dragon
Species: Ocean dragon
Abililty(s): Torrent, Rough skin (dream ability)

evolves into Spiragoon at level 35

HP: 104
ATK: 80
DEF: 80
SPATK: 66
SPDEF: 80
SPD: 30
Total: 440

Start Scratch
Start Leer
Start Water Gun
6 Water Gun
8 Rage
13 Bite
15 Scary Face
18 Dragon Breath
22 Ice Fang
25 Coral Cutter
31 Crunch
34 Dragon Pulse
40 Slash
43 Screech
49 Thrash
51 Aqua Tail
57 Outrage
60 Hydro Pump

TM01 Hone Claws
TM02 Dragon Claw
TM05 Roar
TM06 Toxic
TM07 Hail
TM10 Hidden Power
TM13 Ice Beam
TM14 Blizzard
TM17 Protect Normal
TM18 Rain Dance
TM21 Frustration
TM27 Return
TM28 Dig
TM31 Brick Break
TM32 Double Team
TM39 Rock Tomb
TM40 Aerial Ace
TM42 Facade
TM44 Rest
TM45 Attract
TM48 Round
TM55 Scald
TM56 Fling
TM65 Shadow Claw
TM75 Swords Dance
TM80 Rock Slide
TM87 Swagger
TM90 Substitute
TM94 Rock Smash
HM01 Cut
HM03 Surf
HM04 Strength
HM05 Waterfall
HM06 Dive

Signiture move: Coral Cutter (Water power 70) The user charges at the foe and cuts them using it's coral covered body. This move may make the foe flinch and also shatters barriers.

Hydrake are often solitary creatures, darting through the sea at high speeds using their webbed limbs and hydrodynamic wings. They dive up from the sea to catch prey in the air mid jump, or soar down from the sky and into the water, straight into schools of fish for prey there too.

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EX162. Spiragoon ( Spirit - Lagoon)
Type: Water/Dragon
Species: Deepsea dragon
Abililty(s): Torrent, Rough skin (dream ability)

HP: 135
ATK: 100
DEF: 100
SPATK: 73
SPDEF: 100
SPD: 42
Total: 550

Start Scratch
Start Leer
Start Water Gun
6 Water Gun
8 Rage
13 Bite
15 Scary Face
18 Dragon Breath
22 Ice Fang
25 Scald
31 Crunch
34 Dragon Pulse
41 Slash
45 Dragon Spikes
52 Thrash
55 Aqua Tail
59 Outrage
63 Hydro Pump

TM01 Hone Claws
TM02 Dragon Claw
TM05 Roar
TM06 Toxic
TM07 Hail
TM10 Hidden Power
TM13 Ice Beam
TM14 Blizzard
TM15 Hyper Beam
TM17 Protect
TM18 Rain Dance
TM21 Frustration
TM26 Earthquake
TM27 Return
TM28 Dig
TM31 Brick Break
TM32 Double Team
TM39 Rock Tomb
TM40 Aerial Ace
TM42 Facade
TM44 Rest
TM45 Attract
TM48 Round
TM52 Focus Blast
TM55 Scald
TM56 Fling
TM65 Shadow Claw
TM68 Giga Impact
TM75 Swords Dance
TM78 Bulldoze
TM80 Rock Slide
TM82 Dragon Tail
TM87 Swagger
TM90 Substitute
TM94 Rock Smash
HM01 Cut
HM03 Surf
HM04 Strength
HM05 Waterfall
HM06 Dive

Signiture move: Dragon spikes (Dragon 15 pwr 10pp) the user launches dragon scaled spikes at the foe, hitting them 2-5 times. Afterwards, these spikes will inflict 1/12 of their health as damage at the end of each of their turns, and this includes any pokemon sent out afterwards too as long as the spikes remain on the field.

These dragons can perfectly camoflage themselves in any depth of water, and power through it almost effotlessly with their strong wings and webbed limbs. The huge and sharp spikes on their body can protect them from many physical threats as well as be used as a weapon in battle.