Mraneveno Pokedex: #7, 8, 9; Watana, Welliton, Aquasun.

Watana:
The Skull Pokémon.
Water Type
Pokédex:Watana’s structure mimics that of many Pokémons’ skulls. It’s body is actually a sturdy material, similar to bone.
Moves: Hatch: Pound, Tail Whip. Lv.5:Water Gun. Lv.10:Scary Face. Lv.16:Water Pulse.
Ability 1:Torrent. Hidden Ability:Intimidate.
Evolves into Welliton at Lv.18.
Welliton:
The Cracked Skull Pokémon.
Water/Dark Type
Pokédex:Living 58 Meters below sea level, this species of Pokémon live in total isolation. The first spotting of one was after a Watana evolved and not in the wild.
Moves: Evolve:Faint Attack: Lv.21:Hypnosis. Lv.24:Sea Slash(A water version of Leaf Blade.). Lv.28:Aqua Ring. Lv.30:Ice Punch. Lv.36:Mean Look.
Ability 1:Torrent. Hidden Ability:Intimidate.
Evolves into Aquasun at Lv:38.
Aquasun:
The Skeleton Pokémon.
Water/Dark Type
Pokédex:Apon evolving, most of their bodies are covered in an even tougher than normal bone-material. They seem to always be akward, as if they want to escape from the shell.
Moves: Evolve:Aqua Bomb(A high damaging water move with low accuracy.). Lv.41:Night Slash. Lv.45:Blue Sign(Raises Sp.Defense and Sp.Attack of all water type party members.). Lv.47:Nasty Plot. Lv.52: Dark Pulse. Lv.60:Hydro Pump. Lv.72: Dreadnaught(A low damaging dark move that hits 5 times and traps the opponent.).
Ability 1:Torrent. Hidden Ability:Hydro Shell(Defense cannot be lowered by others besides itself.)
Does not evolve.

Question:What starter would you pick to join you through Mraneveno?